Source: National Lock News, May 1937, Vol. 1, No. 1; 1937 – 1940 were donated to Rockford Public Library
Industrial League Bowling
Elco Screw-tinizer, 1947 – Elco Tool and Screw Corp.
Feb. 1947 issue 11 pages Vol. 3 No. 2
*****4 Additional Pages in actual newsletter*******