Here are two volumes of the PGA publication entitled The Book of Golf. These are softcover magazines.
They were published by the PGA with the assistance of Golf Digest Magazine. Size is 10 1/2 X 8 1/4 In. and each have 96 pages. The 1968 edition is the first year that magazine was published.
Interesting reading and lots of information
They are in Good condition and have handling wear mostly scuffing and rubbing to the covers. The 1968 has some staining to the last several pages that affects the outer edge of the pages. Some pages may have had moisture exposure.