From the Oakland (CA) Tribune, 5-23-1941, p. C-9
"Martinez, May 23. -- Frank Chapman, assisted by his daughters, Mary and Betty, entertained with a magician act at the Sons' and Daughters' Day of Martinez Kiwanis Club yesterday noon at the Travelers Hotel."
From the California Death Index at Ancestry.com:
Name: Chapman, Frank Montgomery
Social Security #: 566017535
Birth Date: 4 Jan 1901
Death Date: 14 Jul 1954
Death Place: San Diego
Mother's Maiden Name: Montgomery
Father's Surname: Chapman
He doesn't seem to be in the online Social Security Death Index.
1920 census for Baltimore, MD:
Chapman, Franklin; Stepson (to ??? and Eliza Hilgeman); single; age 19; Clerk at a Wholesale Milling company; address 3833 Park Heights Ave.
1910 census has more or less the same info except Stepfather's name is Laurence or Lauence and he isn't employed.
1930 Census for Baltimore, MD:
Chapman, Frank; age 29; wife Mary age 29; age at first marriage 23; daughter Mary age 1-1/2; Floormanager at a Department Store; address 3323 Burleith Ave.