Bookman's Price Index: A Guide to the Values of Rare & Other Out-Of-Print Books

Hardback
Established in 1964, Bookman's Price Index is an index to rare and antiquarian books offered for sale in the catalogs of 100-200 book dealers in the U.S., Canada, and the British Isles. The number of titles listed in each volume is approximately 15,000; in the course of a year some 50-60,000 books are described.