Source: American Manufactured Furniture, 1988.
National Mirror Works
Illinois Cottage, 507 Kent St. – Sept. 1930
Source: Rockford Republic, Sept. 14, 1930 
National Mirror Works – 1940, includes photo
Source: 1940 Polk’s Rockford City Directory, p 48 of advertising section
Anderson, Laurine S.
sten. National Mirror Works h. 2127 7th St.
Source: 1937 Rockford City Directory
National Mirror Works – National Glass Co., multiple years
Source: Rockford Daily Republic June 4, 1902
Source: Rockford Morning Star August 21, 1970
Source: Rockford Morning Star Nov. 8, 1930
Source: Rockford Morning Star Jan. 5, 1968
National Mirror Works – 1921
1925 Kishwaukee St.
Source: 1921 Rockford City Directory
National Mirror Works – 1942
Source: 1942 Polk’s Rockford City Directory
Rockford Screw Products – new firm, 1929
Source: Rockford Daily Republic Feb. 18, 1929
Rockford Furniture Map (1925)
Source: Rockford Furniture Herald, April 1925
Mirror Manufacturers
Cadillac Glass Co., 525 So. Main, Tel 3-0404
Interstate Glass Works, 120 Kishwaukee St., Tel 4-2260
National Mirror Works, 1925 Kishwaukee St., Tel 4-9401
Source: 1948 Polk’s Rockford City Directory