[5] On May 31, 1942, on WBBM, Mitchel directed the Columbia Workshop's world premiere presentation of poet Kenneth Patchen's radio play The City Wears a Slouch Hat, accompanied by a five-member percussion ensemble performing John Cage's score, conducted by the composer.
The cast included Mitchell's soon-to-be wife Madelon Grayson (né Baker), Les Tremayne, Forrest Lewis, Jonathan Hole, Frank Dane, and John Larkin.
[21] The following year he produced, directed, and starred in a revival of Death Takes a Holiday, playwright Walter Ferris's English-language adaptation of Alberto Casella's La morte in vacanza.
[27] It next surfaced with Mitchel's Maya on October 17, 1954, as the two formed the back end of a trio of shorts screened at the Memorial Art Gallery in Rochester, New York.
Contemporaneous newspaper listings indicate that, for at least one six month period (December 1964–May 1965), Mitchel hosted a 30-minute, weekly, eponymous Sunday evening radio program on KTOK in Oklahoma City.
[45] A longtime resident of Sunland-Tujunga,[46] Mitchel attained a double distinction in 1950: becoming both the neighborhood's first honorary mayor[b] and the president of the local chamber of commerce.