George Jacob Schweinfurth – 1941 article

Source: Rockford Streamlined, 1834 – 1941, F. Ford Rowe, 1941, p.73

Forest Citys, Rockford, baseball team – 1941 article

Source: Rockford Streamlined, Rockford Chamber of Commerce, 1941, pp 70-71

Winnebago Indian Tribe, Winnebago County – 1941 article

Source:  Rockford Streamlined, by Rockford Chamber of Commerce, 1941, page 66

National Lock Co., The – 1941 article, photo

Source: Rockford Streamlined, by Rockford Chamber of Commerce, 1941, page 65