The front panel shows a large zwieback on a dark green background. The back panel has a promo for the National Biscuit Co.
Donor: Sliker, Shirley Brocker
Brand Name: Nabisco
Publisher: National Biscuit Co. (Amsterdam, N.Y.)
6.4 x 10.2 cm
Copyright: Permission is granted from the copyright owner/holder.
Citation: N.B.C. Zwieback. The Alan and Shirley Brocker Sliker Collection, MSS 314, Special Collections, Michigan State University Libraries. Available at http://www.lib.msu.edu/exhibits/sliker/detail.jsp?id=2190