Much of the source material for this book derives from personal letters. I have made small changes to punctuation and capitalization where necessary. The occasional typo has been corrected from original documents, and abbreviations are spelled out. For example, Ezra Pound’s references to “L.R.” or “M.C.A.” in various letters are changed to “The Little Review” and “Margaret Anderson.” All italics are in the original sources unless otherwise noted in the endnotes. On the rare occasions where I speculate based on available documents, I indicate that in the endnotes. Please see my website for more extensive endnotes and a complete bibliography.