Many of our books are 1st edition rare originals from personal collection of SID Williams and other high profile chiropractors. If you are not a chiropractor or if you are not gifting it to a chiropractor do not purchase. This books was printed in 1955 and one of the rarest book you can find. Authored by BJ Palmer published by Palmer School of Chiropractic. Super Rare Book. Would make a great gift for a chiropractor.