The No. 1 Price Guide to M.I. Hummel: Figurines, Plates, More: 9780942620214: Miller, Robert L.: Books - Amazon.com
Number One Price Guide to M. I. Hummel by Robert L. Miller, Paperback | Pangobooks
1979 Hummel Art Price Guide and Supplement by John Hotchkiss - Etsy
The Official M.I. Hummel Price Guide: Figurines & Plates (Hummel Figurines and Plates): Von Recklinghausen, Heidi Ann: 9781440237133: Amazon.com: Books
Hummel Figurines: Price List, History and Rare Examples
Amazon.com: Hummel: An Illustrated Handbook and Price Guide: 9780870697289: Armke, Ken: Books
M.J. Hummel Goebel Figurines Guide For Collectors Art Price Guide Hotchkiss RARE | eBay