Rittenhouse, Judith A , Ornamental & Figural Nutcrackers , 1993, Collector Books, Kentucky, ISBN 0-89145-518-3
Rollband, James , American Nutcrackers, A Patent History and Value Guide , 1996, Off Beat Books, California, ISBN 0-9641243-2-7
Sadly, all of these are out of print at the moment; if you can find a copy, Judith Rittenhouse's book is excellent.
My book is now available from Shire Books - look under Household Bygones. Also from most UK museums and antique centres.
Bob Mills asserts copyright in the text, images and structure of this site, none of which may be reproduced without his permission, however, please email me if there is something you would like to reproduce. All of the information (descriptions, values etc.) on this site is correct to the best of my knowledge, no responsibility whatsoever is accepted for any loss or damage resulting directly or indirectly from the use of this information.