The Official M.I. Hummel Price Guide: Figurines & Plates (Hummel Figurines and Plates): Von Recklinghausen, Heidi Ann: 9781440237133: Amazon.com: Books
No. 1 Price Guide to M.I.Hummel Figurines, Plates, Miniatures, & More (Mi Hummel Figurines, Plates, Miniatures & More 10th Ed. (Mi Hummel Figurines, Plates, Miniatures & More Price Guide): Robert L. Miller:
Top 10 Rare Goebel Hummel Figurines and Their Prices - Antiques Prices