[4][5] Some members of the ventriloquial community maintain that Marshall carved Charlie McCarthy for the famous ventriloquist Edgar Bergen while working in Theodore Mack & Sons wood shop, though that is a matter of dispute.

At age 14, Marshall was hired by a local furniture factory, Theodore Mack and Son, which also produced and sold wooden puppets and dummies.

[9] On July 22, 1956, Marshall appeared on the television show What's My Line in which Paul Winchell (along with his dummy Jerry Mahoney) was a member of the panel of judges tasked with identifying the guest.

[11] Classic Marshall figures can be identified by their large eyes (often wall eyed) with small glass pupils, large mouth painted bright red and unique paint tones, including a shade of orange which appeared as human skin tone on black and white televisions screens and on stage when lit by a bright light (commonly known as "Marshall Orange").

[12] Two dummies carved by Marshall (Paul Winchell's Jerry Mahoney and Knucklehead Smiff) are currently held at the Smithsonian's National Museum of American History.