Source: Rockford Register Star Feb. 15, 1979
Martin Gustafson Inc.
Martin Gustafson, Inc., ad – 1976 Grand Opening after Expansion
Source: Rockford Register-Republic November 12, 1976
Martin Gustafson, Inc., ad – 1976 Expansion
Source: Rockford Morning Star February 13, 1976
Martin Gustafson Inc. – 1964
Source: Rockford East High School 1964 Argus Yearbook ad