Clock Identification and Price Guide Book #1, by Roy Ehrhardt, published by Heart of America Press, originally published in 1977 and updated in 1979. This book contains carefully selected actual pages from original factory sales catelogs, factory advertisements, supply house catelogs and sales brochures. It covers American and imported clocks from 1850 to the 1940's. The following is given for each clock: The year it was offered for sale, The factory description, the price it sold for originally and the present (1979) retail value. This spiral bound book has over 4000 clocks pictured in 192+ pages in an 8 1/2 by 11 inch format. The book is in good condition with no tears or folded pages. The cover shows some wear and has a couple tear-throughs at the spiral binding.