In the 1920 US Census for District 153, Los Angeles Assembly District 63, Los Angeles, California the family of William E. Barnum was enumerated as follows:
Dwelling #48; Family #48 (4447 Russell Avenue)
Barnum, William E.; Head; Rents non-farm home; Male; White; 48; Married; Can read and write; b. Illinois; Both parents b. Illinois; Able to speak English; Postman; Government
Barnum, Myrtle; Wife; Female; White; 43; Married; Can read and write; b. Ohio; Both parents b. Ohio; Able to speak English; No occupation
Barnum, Thomas A.; Son; Male; White; 10; Single; Attended school within the census year; Can read and write; b. Illinois; Father b. Illinois; Mother b. Ohio; Able to speak English; No occupation
California Death Index, 1940-1997 about William E Barnum. Name: William E Barnum; Social Security #: 0; Sex: Male; Birth Date: 10 Feb 1873; Birthplace: Illinois; Death Date: 29 Aug 1942; Death Place: Los Angeles; Father's Surname: Barnum.