The Historians' History of the World

The Historians' History of the World, subtitled A Comprehensive Narrative of the Rise and Development as Recorded by over two thousand of the Great Writers of all Ages, is a 25-volume encyclopedia of world history originally published in English near the beginning of the 20th century. It was compiled by Henry Smith Williams, a medical doctor and author of many books on medicine, science, and history, as well as other authorities on history, and published in New York in 1902 by Encyclopædia Britannica and the Outlook Company. It was also published in London printed by Morrison &amp; Gibb Limited, of Edinburgh. A second edition was published in 1907 in London by The Times. Two further volumes were subsequently released in the 5th edition of 1926, titled "These eventful years" and dealing with the First World War, published by Encyclopaedia Britannica. 
Others involved were historian Walter Lynwood Fleming, and Rupert Hughes as editor.
Digital reproductions of the volumes are available via the Google Books project (links below). Most have been converted to the DjVu file format and made available on archive.org.
List of volumes.
Volume I: Prolegomena, Egypt, Mesopotamia.
Google Books link to Volume I
The prolegomena discuss various topics relating to the practice of historical study.
Volume II: Israel, India, Persia, Phoenicia, minor nations of Western Asia.
Google Books link to Volume II
"Part IV: The History of Israel" is based chiefly upon the following authorities, as stated in the front matter: Ernest Babelon, The Holy Bible, T.K. Cheyne, Maximilian Wolfgang Duncker, G.H.A. Ewald, Edward Gibbon, F. Hitzig, J. Jahn, Josephus, Rudolf Kittel, , Max Löhr, L. Ménard, H.H. Milman, D.H. Müller, Salomon Munk, F.W. Newman, E. Renan, A.H. Sayce, George Smith, Bernhard Stade.
Beginning with the Biblical history of Abraham and the early Israelites, Moses, the Judges, Samuel, Saul, David, Nehemiah, it moves on to the Maccabean Revolt, early Christianity, and ends with the Fall of Jerusalem.
"Part V: The History of Phoenicia" is based chiefly upon the following authorities: A.H.L. Heeren, John Kenrick, , T. Mommsen, F.C. Movers, .
Starting with the origins of the people of Phoenicia, this section documents their rise to maritime supremacy under Hiram I and his successors, Phoenicia under the Persians and Greeks the history of Carthage and its decline with the Punic Wars.
"Part VI: The History of Western Asia" is stated in the front matter as being based chiefly upon the following authorities: Ernest Babelon, Max Duncker, Paul Karolides, Eduard Meyer, Perrot &amp; Chipiez, Georges Radet, A.H. Sayce, Albert Socin, Charles W. Super.
Quickly detailing the story of the Hittites, it moves on to the Scythians, and Cimmerians, the Lydians and a handful of other peoples of the Ancient Near East.
"Part VII: The History of Ancient India" gives in its front matter the following authorities from which it is chiefly derived: Arrian, Gustave Le Bon, Eugene Bournouf, Mountstuart Elphinstone, A.H.L. Heeren, W.W. Hunter, Sir William Jones, Ferdinand Justi, Saloman Lefmann, James Mill, Vedas, H.H. Wilson.
In three chapters, a brief overview of the early Hindus, the Vedas, the Brahmins, up to a description of the rise of Buddhism.
"Part VIII: The History of Ancient Persia" is based chiefly upon the following authorities: Ctesias, A.H.L. Heeren, Herodotus, G.C.C. Maspero, Eduard Meyer, Theodor Nöldeke, H.C. Rawlinson.Beginning with the Achaemenids, this part describes briefly the Medes, Elamites, leading up to the civilization of Persia under Cyrus and Darius I, Xerxes I and Artaxerxes III along with the fall of the empire.
Volume III: Greece to the Peloponnesian war.
Google Books link to Volume III
Volume IV: Greece to the Roman conquest.
Google Books link to Volume IV
Volume V: The Roman Republic.
Google Books link to Volume V
The cover matter states "Part X: The History of Rome from the Earliest Times to 476 AD" is based chiefly on the works of the following authorities: Ammianus, Appian, Thomas Arnold, Barthélemy Aube, the Augustan History, Julius Caesar, Henry Fynes Clinton, Cicero, Dion Cassius, Dionysius of Halicarnassus, Eutropius (historian), Florus, Victor Gardthausen, Edward Gibbon, Otto Gilbert, Adolf Harnack, G.F. Hertzberg, Herodian, Otto Hirschfeld, Thomas Hodgkin, Karl Hoeck, Wilhelm Ihne, Jordanes, Josephus, George Cornewall Lewis, H.G. Liddell, Livy, Joachim Marquardt, Charles Merivale, Eduard Meyer, Theodor Mommsen, Monumentum Ancyranaum, Cornelius Nepos, B. G. Niebuhr, Pliny the Elder, Pliny the Younger, Plutarch, Polybius, L. von Ranke, Sallust, Wilhelm Soltau, Strabo, Suetonius, Tacitus, Tillemont, Velleius, Georg Weber, Zosimus.
Many other authors are cited in addition to these, though their influence is felt to a lesser extent throughout the work.
Beginning with the early legends of the Founding of Rome and of the Roman Kingdom, it quickly proceeds to the Roman Republic, its development and rise to supremacy via its wars (Punic Wars, Samnite Wars, Macedonian Wars, the Roman conquest of Italy) and moves on to the final days of the Republic, the reforms of Tiberius and Gaius Gracchus, as well as those of Gaius Marius and his conflict with Sulla following the Jugurthine War in Africa on to the rise of Pompey and his war against Julius Caesar, the Catiline conspiracy, and ultimately the Crisis of the Roman Republic and its fall.
Volume VI: The early Roman empire.
Google Books link to Volume VI
Continuing "Part X" directly from the preceding volume, this volume begins with Augustus and goes up to the Fall of the Western Roman Empire in 476. It discusses the rise of Christianity, the many emperors who held power in Rome during the founding and the fall of the Roman Empire, the division of the Roman Empire and the many barbarian invasions (Huns, Goths, Vandals) leading up to Rome's fall. 
Volume VII: The later Roman Empire.
Google Books link to Volume VII
"Part XI: The History of the Later Roman Empire" states that, along with over 75 additional authors, the work is based chiefly upon the following authorities: Agathias, Appian, Augustan History, J. B. Bury, Henry Fynes Clinton, George Kedrenos, Anna Komnene, Cassius Dio, Doukas (historian), Einhard, Eutropius (historian), George Finlay, Heinrich Gelzer, Edward Gibbon, Wilhelm von Giesebrecht, Ferdinand Gregorovius, Gustav Hertzberg, Thomas Hodgkin (historian), Jordanes, John Malalas, Procopius, Leopold von Ranke, Strabo, Tacitus, Marcus Velleius Paterculus, Georg Weber, Joannes Zonaras, and Zosimus.
Beginning with the reign of Arcadius in 395, "Book I: The Later Roman Empire in the East" deals with the Eastern Roman Empire through to the Fall of Constantinople in 1453, detailing as well the Siege of Constantinople (1204) by the members of the Fourth Crusade which led to the short-lived Latin Empire along with the various incidents in the history of Constantinople with several chapters dedicated to Justinian I; "Book II The Later Roman Empire in the West" begins with Odoacer and the Visigoth invasion of Italy followed by the Lombard invasion of Italy, the Carolingian dynasty and Charlemagne and the birth of the Holy Roman Empire up to the Investiture controversy and Henry V, Holy Roman Emperor.
Volume VIII: Parthians, Sassanids, and Arabs, the Crusades and the Papacy.
Google Books link to Volume VIII
"Part XII: The History of the Parthians, Sassanids, and Arabs" is based upon the following authorities: Abd al-Latif al-Baghdadi, Bar Hebraeus (Abul-Faraj), Abu'l-Fida, Maximilian Wolfgang Duncker, Ignác Goldziher, Alfred von Gutschmid, William Muir, Theodor Nöldeke, Louis-Pierre-Eugène Sédillot, Louis Viardot, Julius Wellhausen, Gustav Weil.
This section begins with the Parthian Empire, the conquests of Mithridates I of Parthia, and the Mithridatic Wars with Mithridates VI of Pontus; the next chapter deals with the Sasanian Empire and the continuation of the Roman–Persian Wars, the Hephthalite–Persian Wars; the history of Pre-Islamic Arabia is discussed, followed by an account of Muhammad the Spread of Islam; the Umayyad Caliphate, the Abbasid Caliphate, and the medieval history of Islam in Spain; finally, this section concludes with an account of Islamic jurisprudence.
"Part XIII: The History of the Crusades and of the Papacy" is based upon the following authorities: Abu'l-Fida, Choiseul, d'Aillencourt, Baha ad-Din ibn Shaddad, James Bryce, William Denton, John William Draper, Einhard, Edward Gibbon, Johann Karl Ludwig Gieseler, Henry Hallam, Henry Charles Lea, Joseph François Michaud, Charles Mills (historian), Henry Hart Milman, Johann Lorenz von Mosheim, Leopold von Ranke, Oswald Joseph Reichel , and Geoffrey of Villehardouin.
This section is divided into two books: the first deals with the Crusades, while the second deals with the History of the papacy.
Volume IX: Italy.
Google Books link to Volume IX
The front matter states that this volume is chiefly based upon the following authors: Francesco Bertolini, J. Burckhardt, Pierre Antoine Daru, S. Astley Dunham, Francesco Guicciardini, W. C. Hazlitt, Heinrich Leo, Machiavelli, F. A. Mignet, H. E. Napier, Lorenzo Pignotti, A. von Reumont, William Roscoe, J.C.L.S. Sismondi, J.A. Symonds.
Various other authors are given, from the 16th-century Italian historian Ammirato and the 12th-century Byzantine princess Anna Komnene to the renowned French Enlightenment writer Voltaire and over 70 others.
Volume X: Spain and Portugal.
Google Books link to Volume X
"Part XV: The History of Spain and Portugal" is based chiefly upon the following authorities:
Lopez de Ayala, , H. Baumgarten, F. de Fonseca Benavides, G. Bergenroth, , Ulick R. Burke, E. Castelar, Nuñez de Castro, Pinheiro Chagas, J.A. Conde, W. Coxe, R. Dozy, Samuel Astley Dunham, Florez Y Lafuente, V. de la Fuente, L.P. Gachard, Domião de Goez, A. Herculano, A. de Herrerra, N. Rosseeuw St. Hilaire, M.A.S. Hume, H.C. Lea, Diogo de Lemos, Juan de Llorente, R.H. Major, Juan de Mariana, W.F.P. Napier, João P. Oliveira-Martins, J. Ortiz y Sanz, W.H. Prescott, P. de Sandoval, M. Suriano, A. de Vertot, Geronimo Zurita.
"Book I" begins briefly with Spain's earliest known history under the Celts, the Phoenicians, and the Ancient Greeks through to the Roman conquest of Hispania, and the Gothic invasion; it quickly moves on to the Muslim conquest of Spain to the overthrow of the Muslims; it discusses the Kingdom of Aragon and of Castile before going in some greater detail regarding the reigns of Ferdinand II of Aragon and Isabella I of Castile, and of the monarchs of Habsburg Spain; this is followed by the House of Bourbon, Spain during the French Revolution, and the Peninsular War and ends in 1902 with the regency of Maria Christina of Austria.
"Book II" details the history of Portugal beginning with Afonso I of Portugal, the first king of Portugal, along with other kings including Afonso II of Portugal, Denis, and John I of Portugal before moving on to the role played by Portugal in the Age of Discovery, the Portuguese in India with the Portuguese conquest of Goa, and discusses the decline of Portugal as a major European power, the 1755 Lisbon earthquake, Brazil, Napoleon's Invasion of Portugal, and finishes off with the reign of Carlos I of Portugal.
Finally, a 36-page appendix is given on the Inquisition, the Cathari, the Waldensians and the Albigensian Crusade, the Jews in Spain, the Auto-da-fé and Tomás de Torquemada, the Grand Inquisitor of Spain.
Volume XI: France, 843–1715.
Google Books link to Volume XI
"Part XVI: The History of France" is based chiefly upon the following authorities:
A. Alison, Alexis Belloc, L.P.E. Bignon, Louis Blanc, Jules Caillet, J.B.R. Capefigue, Thomas Carlyle, François-René de Chateaubriand, Adolphe Chéruel, John Wilson Croker, E.E. Crowe, C. Dareste de la Chavanne, Brugière de Barante, A. Granier de Cassagnac, Philip de Commines, Jurien de la Gravière, Alexis de Tocqueville, Jehan de Vaurin, Victor Duruy, Gabriel-Henri Gaillard, François Guizot, C.P.M. Haas, Ernest Hamel, Ludwig Häusser, Karl Hillebrand, G.W. Kitchin, Lacretelle, A. Lamartine, Jules Michelet, F.A. Mignet, Enguerrand de Monstrelet, C. Pelletan, Victor Pierre, Jules Quicherat, Alfred Nicolas Rambaud, J.E. Robinet, Duc de Saint-Simon, J.R. Seeley, , J.C.S. de Sismondi, Albert Sorel, H.M. Stephens, Heinrich von Sybel, H. Taine, M. Ternaux, A. Thiers, Voltaire.
Additional citations are given from over 70 additional authorities, including the likes of Walter Scott, Symphorien Champier, Guillaume de Nangis, Hippolyte Castille and Edmond Henri Adolphe Schérer.
This volume begins with the later Carolingians and documents the foundation of the House of Capet, the rise of the House of Valois, the Hundred Years' War, Cardinals Mazarin and Richelieu, and discusses the House of Bourbon to the death of Louis XIV of France in 1715.
Volume XII: France, 1715–1815.
Google Books link to Volume XII
Beginning with the early years of Louis XV of France, it moves on to Madame de Pompadour, Voltaire, Louis XVI and Marie Antoinette leading up to the French Revolution under Honoré Gabriel Riqueti, comte de Mirabeau, the Execution of Louis XVI and the Girondins, the Reign of Terror, the rise of Napoleon and his wars, the Treaties of Tilsit in 1807 down to the end of Napoleon with the Battle of Waterloo.
Volume XIII: France, 1815–1904; Netherlands.
Google Books link to Volume XIII
Volume XIV: The Netherlands (concluded), the Germanic empires.
Google Books link to Volume XIV
Continuing with the lowland nations from the previous volume, the first section of "Volume XIV" discusses Netherlands from 1722: William IV, Prince of Orange, the Treaty of Aix-la-Chapelle, the Fourth Anglo-Dutch War and the impact of the French Revolution on the Netherlands, followed by its absorption into the French Empire; the ministry of Johan Rudolph Thorbecke is discussed, and the history of the Netherlands concludes with Wilhelmina of the Netherlands. The history of Belgium is also touched upon in two chapters: its role during the War of the Austrian Succession, the Brabant Revolution and the Belgian Revolution, and ending with the reigns of Leopold I of Belgium and Leopold II of Belgium.
"Part XVIII: The History of the Germanic Empires" states that the work was based chiefly upon the following authorities: Aeneas Silvius, Alfred von Arneth, , Karl Biedermann, Hans Blum, Thomas Carlyle, Chronicles of Colmar, , William Coxe, Mandell Creighton, Hans Delbrück, Eduard Duller, Karl Fischer, , Frederick II, , Johann Karl Ludwig Gieseler, , Karl Rudolf Hagenbach, James Wycliffe Headlam, , Friedrich Kohlrausch, , , Karl Lamprecht, János Majláth, H. Marnali, Wolfgang Menzel, D. Müller, Wilhelm Oncken, William Pierson, , Hans Prutz, Leopold von Ranke, Heinrich von Sybel, Heinrich von Treitschke, Georg Waitz, Adam Wolf.
"Book I: The Holy Roman Empire" begins with the Hohenstaufens, detailing the Emperors Lothair II, Conrad III and his Crusade, Frederick Barbarossa and his conflicts with the Pope, the Peace of Constance, and his Crusade; moving on to the decline of this royal family, the book describes the reign of Frederick II, Holy Roman Emperor who peacefully acquired Jerusalem during the Sixth Crusade. Moving on to the House of Habsburg, it discusses Rudolf I of Germany who came to power in 1273, beginning that dynasty's power throughout Europe for centuries; Charles IV, Sigismund, and the rise of the Hanseatic League, the Swabian League, and the Hussites. Moving on to Frederick III, Maximilian I and the Diet of Worms, and to Martin Luther and the Protestant Reformation; the Schmalkaldic War, the Protestant Union, the Thirty Years' War, the Grand Alliance, the Treaty of Ryswick, the Treaty of Passarowitz, and the Treaty of Versailles; a brief treatment of the Seven Years' War is given, the reign of Maria Theresa, and the decline of the Holy Roman Empire: the Treaty of Reichenbach, Leopold II, the Congress of Rastatt, to the abdication of Francis II, Holy Roman Emperor.
"Book II: The Empire of Austria-Hungary" picked up in the year 1806 with the Napoleonic Wars, Klemens von Metternich, the Treaty of Paris, the suppression of the Prague Revolution in 1848, the Hungarian Revolution of 1848 and Hungary's declaration of independence in 1849, and ends with the Battle of Novara.
Volume XV: Germanic empires (concluded).
Google Books link to Volume XV
Volume XVI: Scandinavia, Switzerland to 1715.
Google Books link to Volume XVI
"Part XIX: The History of Scandinavia" states that it is based chiefly upon the following authorities: Adam of Bremen, A. Ahnfeldt, C.F. Allen, Georg Binder, Karl Blasendorff, Gustav Peter Blom, H.S. Bræksted (in "Encyclopædia Britannica"), , Olaf Celsius (1716–1794), Andrew Crichton, Olof von Dalin, O.H. Dumrath, Samuel Astley Dunham, Anders Fryxell, C.C.A. Gosch (in "Encyclopædia Britannica"), Erik Gustaf Geijer, Georg Friedrich von Jenssen-Tusch, Samuel Laing, , K. Lundblad, Paul Henri Mallet, O. Montelius, Friedrich Münter, W. Oncken, K.P.P. Paludan-Müller, Olaus Petri, Erik Pontoppidan, Kurt von Schlözer, Paul Christian Sinding, Snorri Sturluson, H. von Treitschke, Henry Wheaton.
"Part XX: The History of Switzerland" is derived chiefly from the following authorities: W. A. B. Coolidge, A. Daguet, , , Johann Karl Ludwig Gieseler, Maguenot, G. O. Montelius, Johannes von Müller, Wilhelm Oechsli, R. von Radegg, Élisée Reclus, , A. Vieusseux, Johannes Vitoduranus, , J. Wilson.
Volume XVII: Switzerland (concluded), Russia and Poland.
Google Books link to Volume XVII
Volume XVIII: England to 1485.
Google Books link to Volume XVIII
Volume XIX England, 1485–1642.
Google Books link to Volume XIX
Volume XX: England, 1642–1791.
Google Books link to Volume XX
Volume XXI: Scotland, Ireland, England since 1792.
Google Books link to Volume XXI
Volume XXII: The British colonies, the United States (early colonial period).
Google Books link to Volume XXII
Volume XXII supplement: Australia and New Zealand.
Published 1908, and containing two additional chapters on Australia and four on New Zealand.
Volume XXIII: The United States (concluded), Spanish America.
Google Books link to Volume XXIII
Volume XXIV: Poland, the Balkans, Turkey, minor Eastern states, China, Japan.
Google Books link to Volume XXIV
Volume XXV: Index.
Google Books link to Volume XXV
Volume XXVI: These eventful years, part I..
Google Books link to Volume XXV
Volume XXVII: These eventful years part II..
Google Books link to Volume XXV
Reception.
"The Spectator", writing on 25 January 1908 and prior to the release of the second half of the series, notes a handful of shortcomings including a fleeting portrayal of Homer and a questioning of the historicity of Christ, but states that "the general reader...will find here a great treasury of knowledge" and that "they form an extremely interesting shelfful."