| Just in. This used 1937 Lockeyist 1937 Miscellaneous Locksmithing Information and Codes is a great little book! About 67 pages. Page numbers continue from previous versions. 1937 Studebaker codes, Nash and Lafayette N, B series for GM, FJ and FX code series, plus other great info. The cover is okay, but obviously worn. A bookworm got about 1/2" into it in the middle pages, not not more than a little notch on the bottom. Get this rare book!