In the United States Census of 1930, Jack L. Warner identified the birthplace of both of his parents as Russia. "Fifteenth Census of the United States: 1930",(չաշխատող հղում) enumeration date April 23, 1930, "Beverly Hills City", Los Angeles County, California. Digital copy of original enumeration page at FamilySearch, a free online genealogical database provided as a public service by The Church of Jesus Christ of Latter-day Saints, Salt Lake City, Utah. Retrieved August 8, 2017.
Slight variations in the spelling of Irma Warner's maiden name can be found in different sources; however, her son's (Jack M. Warner's) birth record in "The California Birth Index, 1905-1995"(չաշխատող հղում) lists the spelling of her name as "Salomon". Content of original record from the Vital Statistics Department of the California Department of Health Services in Sacramento, California, is available at FamilySearch. Retrieved August 8, 2017.
