From the August 1998 Peg-Board
MARION O'CALLAHAN JEFFRESS died on June 7, 1998 at the age of eighty-two. She worked as a cel painter at UPA, Warners, Wolff, C&D and Hanna-Barbera from 1937 until 1980.ion, Inc., Fine Arts Films, Jay Ward, Quartet, Playhouse, Hanna-Barbera and Larry Harmon.
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