Records of a committee formed by Cudahy optometrist Dr. Edward J. Tomasik to commemorate the 500th anniversary of the birth of astronomer and scientist Mikolaj Kopernik (Nicolaus Copernicus) in 1473. The Milwaukee-based organization sponsored several activities during 1973; among them were a banquet, an exhibit of Copernicus artifacts at the Milwaukee Public Museum, and publication of a monograph. Included in the collection are correspondence, financial and other records of the committee; papers regarding arrangements for the banquet and exhibit, such as correspondence, minutes of meetings, programs, speeches, and photographs; and printed reference material and clippings. Although the anniversary year was 1973, there is a small amount of material pre- and post-dating 1973, with fragmentary tax and financial records dating to 1978.