According to the Publisher, "Contents include: Author's note on Yo-Yo Collecting, Yo-Yo History, All Western Plastics, Inc, Bob Allen, Alox Manufacturing Company, The Bandalor Company, Cayo Manufacturing Company, Champion, Cheerio Toys and Games, Inc., Chico Toys Company, Dell Plastics, Double Doozer, Donald F. Duncan, Inc. Festival Products Company, Fli-Back Company, Inc, Fores (The Yo-Yo Manufacturing Company), Goody Manufacturing Company, Gorham, Gropper, Hallmark, Hasbro Industries, Inc., Hi-Ker (W.H. Schlee, Inc.), HYO, Jewel Company, Kaysons Novelty Company, Knights, Kusan, Inc., Lead Works, Lumar, Medalist (Sconsin Products, Inc.), Nadson, National Yo-Yo and Bo-Lo Company Ltd., Parker, Royal Tops Manufacturing Company, Inc., Jack Russell Company, Spinmaster, Star, Towle, Whirl King, Whirl-E-Gig, and Bibliography."

This book was new from the publisher. It has a crease in the back cove and some cover wear from storage., otherwise is in good condition and would sell at your local book store for $16.95