Some records show him as John Martin Finger
and others as John Marcus Finger Jr.
Found him on the 1920 Justice Precinct 1, Medina, Texas census (dist 144 img 7) as John Finger Jr.
Found him on the 1930 Precinct 1, Medina, Texas census (dist 2 img 16) as John J. Finger
Found him on the 1940 Laredo, Webb, Texas census (dist 240-37 img 54) as John Finger
age 28, public school teacher.
WWII Draft Registration