I'm assuming this is the same person...he's the only 1 on City Directory, and lives in Pasadena; w/Marth, He is listed for the paper listed below, and as a reporter for the L A Times.
DONALD C. WHEELDIN
Donald Wheeldin was identified as a member of the Communist Party by Robert Carrillo Ronstadt on April 25, 1962, in executive session of this committee. The testimony was subsequently released.
Wheeldin was a high functionary in the California Communist Party; a member of the party's State coordinating committee ; member of the executive board, Southern California District Council; and member of the Southern California District Minorities Commission.
On March 26, 1958, Wheeldin resigned from the Communist Party and the staff of the West Coast Communist newspaper, the Daily People's WWld, a position he had held since July 16, 1950.