Source: Rockford Labor News, Feb. 22, 1974, page C – 8, Humphrey Cadillac & Olds ad
A Digital Collection of Rockford, Illinois History
Source: Rockford Labor News, Feb. 22, 1974, page C – 8, Humphrey Cadillac & Olds ad
Source: Rockford Labor News, The; Friday October 27, 1972, page 8
Source: Rockford Register-Republic August 10, 1964
Source: Rockford Morning Star July 27, 1970
Source: Rockford Register Star June 15, 2016
Source: Rockford Magazine November 1986