More Information:

About Roy Eldon Keeling:

Name and birth date from 1900 Census, TX, Dallas Co., and Ancestry.com TX birth records.

Found in 1930 Census, OK, Oklahoma Co., Okla. City, ED 32, sh. 12B, img. 24.
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From SSDI, probably the right Roy Keeling:
ROY KEELING Born: 03 Oct 1894; Died: Apr 1981; Last Res.: 77566 (Lake Jackson, Brazoria, TX); SSN: 466-10-9122; Issued: Texas

About Alleen Rose Wilcox:

Name and birth date from 1930 Census, TX, Dallas Co., and Ancestry.com TX birth records.

About Evelyn Joyce Keeling:

Name and birth date and place from Ancestry.com TX birth records.