| Sources |
- [S53628] Birth index, California, (Ancestry.com. California Birth Index, 1905-1995), Name: Donald Knowles Nichols Birth Date: 4 Feb 1935 Gender: Male Mother's Maiden Name: Knowles Birth County: Santa Barbara (Reliability: 3).
- [S53585] SSDI: Social Security Death Index, Name: Donald K. Nichols SSN: 553-46-8265 Last Residence: 90802 Long Beach, Los Angeles, California, USA BORN: 4 Feb 1935 Died: 6 Jan 1998 State (Year) SSN issued: California (1952) (Reliability: 3).
- [S56430] Ancestry.com, Braley Family Tree, (call number HFA Internet0128).
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