Gentlemen, I give you Donald Johnson:
From the web page of the South Pasadena HS alumni association:
Donald Lloyd Johnson, a resident of Covina, California was born October 12, 1943 in Montebello and passed away on June 3, 2009. Don was a former minor league catcher who was drafted by the Milwaukee Braves 32nd overall in the 1965 amateur entry draft (2nd round) from the University of Southern California. He was involved in a trade that sent Jim Britton to the Montreal Expos for Larry Jaster on December 2, 1969.
Johnson's career lasted from 1965 - 1971. He missed the 1968 season and spent a total of 15 games at the AAA level in 1969 - 1970. Overall, he hit .231 with 29 home runs and 223 hits in 350 games. He played Catcher, Outfielder and Third Baseman.
I came across his name while looking through linescores of the Braves' 1966 spring training games that were in the Chattanooga Times. Injuries shelved Joe Torre and Gene Oliver that spring, so the Braves used several catchers in MLB spring training games, and found Johnson's name in three linescores as a catcher.
He was the only name who I did not have a matched photo from my 1966 project, so I started dropping in key words. That led to this link:
Don Johnson (Deceased), South Pasadena, CA California
Wondering: does this not mean he was Tom Seaver's catcher at USC?