J. L. Clark, ad, 1962 – “Centennial Plus 10” Special Edition

Source: Rockford Morning Star and Rockford Register Republic “Centennial Plus 10” Special Edition, March 1962

“Founder’s Invention Established Clark” – 1962, J.L. Clark Mfg. Co.

Source: Rockford Morning Star and Rockford Register-Republic “Century Plus 10” Special Edition, March 1962