A number of historians began in the early twentieth century to question if the Imprimerie nationale Latin-alphabet type was really the work of Garamond, as the "Grecs du Roi" undoubtedly were. Doubt was raised by French historian Jean Paillard, but he died in the First World War soon after publishing his conclusions in 1914 and his work remained little-read. ATF's historian Henry Lewis Bullen secretly doubted that the 'Garamond' his company was reviving was really Garamond's work, noting that he had never seen it in a sixteenth-century book. He discussed his concerns with ATF junior librarian Beatrice Warde, who would later move to Europe and become a prominent writer on printing advising the British branch of Monotype.