1930 United States Federal Census, Database online. Year: 1930; Census Place: St Paul, Ramsey, Minnesota; Roll: 1114; Page: 4A; Enumeration District: 5; Image: 713.0.Record for Edward Otto
1900 United States Federal Census, Database online. Year: 1900; Census Place: St Paul Ward 1, Ramsey, Minnesota; Roll: T623_782; Page: 8B; Enumeration District: 61.Record for Edward Otto
1910 United States Federal Census, Database online. Year: 1910; Census Place: St Paul Ward 1, Ramsey, Minnesota; Roll: T624_717; Page: 14A; Enumeration District: 26; Image: 157.Record for Edward Otto