The Outline of History

This book was extensively revised and updated for each publication, which occurred in the years: 1918-1919, 1920, 1923, 1925, 1930, 1940, all by Wells. Further updates/revisions were done in 1949, 1956, 1961 and 1969 by Raymond Postgate and G. P. Wells [though the last was not published until 1971. All editions from 1949 to date have been in two volumes.

• 21st Printing of the Third Edition, Revised September 1921.
• "Copyright 1920"
• "Set up and electrotyped. Published November, 1920."
• "Third Edition revised and rearranged September, 1921."
• "Reprinted September, 1921; October, 1921; November, 1921; December, 1921; January, 1922; March, 1922; July, 1922; August, 1922; September, 1922; October, 1922; November, 1922; December, 1922; January, 1923; April, 1923; April, 1923; July, 1923; November, 1923; December, 1923; January, 1924; May, 1924; November, 1924."