Hyder Rollins' first collection of Keats Circle Letters and Papers was published in 2 volumes in 1948. It was followed by a "More Letters and Papers..." in 1955. Then in 1965, those 3 volumes were revised, combined and reissued as a 2 volume set. Do not confuse the later 2 volume set with the earlier one which contained only part of the eventual revised edition. Most copies listed on LT are the later edition.