The Adventures of Nero Wolfe (ABC) 1943-1944

Three actors portrayed Nero Wolfe over the course of the series. J.B. Williams starred in its first incarnation, broadcast Wednesdays on the New England Network (April 7–June 30, 1943). Santos Ortega assumed the role when the suspense drama moved to ABC on Mondays (July 5–September 27, 1943) and Fridays (January 21–July 14, 1944). Luis Van Rooten succeeded Ortega in 1944, Nero Wolfe's last year on ABC.

The Amazing Nero Wolfe (MBS) 1946

The series next surfaced early in 1946, on Sundays, on the Mutual Network, with Francis X. Bushman, one-time movie idol, as Wolfe, and Elliott Lewis as Archie. ... The scripts once again were network originals. The humor verged on slapstick. The concluding show in the series, "The Case of the Shakespeare Folio," aired December 15, 1946.

The New Adventures of Nero Wolfe (NBC) 1950-1951

The third series had Sydney Greenstreet as Nero Wolfe and a succession of Archies included Gerald Mohr, Herb Ellis, Lawrence Dobkin, Harry Bartell and Wally Maher. William Johnstone was heard semi-regularly as Inspector Cramer.

Nero Wolfe (CBC) 1982

In 1982, Canadian actor, producer, writer and cultural pioneer Mavor Moore starred as Nero Wolfe in the Canadian Broadcasting Corporation's 13-episode radio series Nero Wolfe. Don Francks portrayed Archie Goodwin, and Cec Linder played Inspector Cramer.