Letter from A. A. Rumreich, dated June 4, 1935

Letter from A. A. Rumreich to Vivian Rumreich, dated March 14, 1937

Excerpts from the Genealogical History of the Rumreich and Patocka Families, compiled by Clement Patocka

Excerpt from a letter to Frank T. Rumreich from Rudolph Rumreich, dated June 25, 1967

Recollections of Frank T. Rumreich, dated May 1, 1978

The Rumreichs of Mahnomen

Bastyr & Rumreich grocery store, Mahnomen, Minnesota

The Rumreich Brothers...Both Sell "Lilly" in Minnesota, March 21, 1941

Excerpt from Pisek, the First Century - History of Pisek City, pp 17-8

Excerpt from Pisek, the First Century - Frank P. Rumreich Family, page 295

Excerpt from Pisek, the First Century - Dr. Erhart A. Rumreich Family, page 295

U.S. Patent 1,381,887 Lignite Grate by A. A. Rumreich, issued June 14, 1921