Title: America Calling
Broadcast: December 14, 1938
Network: NBC
Co-stars: 
Judy Garland, Mickey Rooney, Paul Muni, Tony Martin—many more!
Duration: 60 minutes (possibly ran longer, but only an hour exists)

Title: Good News of 1937
Episode: 1
Broadcast: January 4, 1937 
Network: NBC
Co-stars: 

Title: Kraft Music Hall
Episode: 14
Broadcast: September 16, 1948
Network: NBC
Co-stars:
Hosted by Nelson Eddy


Screen Guild Theater 

Title: Gulf Screen Guild Show
Episode: Song for Clothilde
Broadcast: Febuary 19, 1939
Network: CBS
Co-stars: 
Robert Taylor
Duration: 29:22

A Song for Clothilde

by Jeanette MacDonald and Robert Taylor | Courtesy of Archive.org

Title: Gulf Screen Guild Show
Episode: Sweethearts
Broadcast: March 25, 1946
Network: CBS
Co-stars: 
Nelson Eddy
Duration: 29:39

Sweethearts

by Jeanette MacDonald and Nelson Eddy | Courtesy of Archive.org

 

Title: Rose Marie
Episode: 353
Broadcast: June 23, 1947
Network: CBS
Co-stars: Nelson Eddy
Duration: 30:08

 

Rose Marie

by Jeanette MacDonald and Nelson Eddy | Courtesy of Archive.org

Title: Sweethearts
Episode: 366
Broadcast: December 15, 1947
Network: CBS
Co-stars: 
Nelson Eddy
Duration: 30:06

Sweethearts

by Jeanette MacDonald and Nelson Eddy | Courtesy of Archive.org

Lux Radio Theatre

Title: Irene
Episode: 87
Broadcast: June 9, 1936
Network: CBS
Co-stars: Regis Toomey
Duration: 101:21

Title: Tonight or Never
Episode: 117
Broadcast: January 25, 1937
Network: CBS
Co-stars: Melvyn Douglas
Duration: 59:18

Tonight or Never

by Jeanette MacDonald and Melvyn Douglas | Courtesy of Archive.org

Title: Naughty Marietta
Episode: 169
Broadcast: March 28, 1938
Network: CBS
Co-stars: Nelson Eddy
Duration: 100:20

Naughty Marietta

by Jeanette MacDonald and Nelson Eddy | Courtesy of Archive.org


Title:
 Smilin’ Through
Episode: 333
Broadcast: January 5, 1942
Network: CBS
Co-stars: Gene Raymond, Brian Aherne
Duration: 59:47

Smilin' Through

by Jeanette MacDonald, Gene Raymond, Brian Aherne | Courtesy of Archive.org


Title:
 Maytime
Episode: 448
Broadcast: September 4, 1944
Network: CBS
Co-stars: Nelson Eddy
Duration: 59:34

Maytime

by Jeanette MacDonald and Nelson Eddy | Courtesy of Archive.org