Ritter Bertha 1951 Olmsted County Death Records death records book N, page 323: 19-572

Ritter Bertha 1951 Ranfranz Funeral Home funeral home records Ranfranz Book 8, p 236; Mrs William C

Ritter Bertha Marie 1950 Vine scrapbook # 8 obituary Vine scrapbook # 8; Page 240 (94) Bertha Marie Bolzin, 4 children

http://www.olmstedhistory.com/research-center/