The authors examine D.D. Palmer's 1910 book The Science, Art & Philosophy of Chiropractic. They present details of its Portland printing and try to draw conclusions about possible distribution methods and the number of books originally printed by D.D. Palmer. The variations in the original printing, as well as later reprints, are discussed in detail with an emphasis on how to tell the books apart. Finally, the authors contacted chiropractic schools in North America to determine how many original 1910 books are in chiropractic schools archives or special collections, in an effort to determine how many copies exist today.
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