W. T. Franklin's text was the standard version of the "Autobiography" for half a century, until John Bigelow purchased the original manuscript in France and in 1868 published the most reliable text that had yet appeared, including the first English publication of Part Four. In the 20th century, important editions by Max Ferrand and the staff of the Huntington Library in San Marino, California ("Benjamin Franklin's Memoirs: Parallel Text Edition," 1949) and by Leonard W. Labaree (1964, as part of the Yale University Press edition of "The Papers of Benjamin Franklin") improved on Bigelow's accuracy. In 1981, J. A. Leo Lemay and P.M. Zall produced "The Autobiography of Benjamin Franklin: A Genetic Text," attempting to show all revisions and cancellations in the holograph manuscript. This, the most accurate edition of all so far published, served as a basis for "Benjamin Franklin's Autobiography: A Norton Critical Edition" and for the text of this autobiography printed in the Library of America's edition of Franklin's "Writings."