Mercury Theater

Here is a sample of the online episodes currently available at The Old Time Radio Fan:

Dracula
1938-07-11 (12.76 MB) [55:46]

The Count of Monte Cristo
1938-08-29 (13.5 MB) [59:00]

War of the Worlds
1938-10-30 (11.74 MB) [51:17]

The Apple Tree
1942-01-12 (6.7 MB) [29:16]

My Little Boy
1942-01-19 (6.03 MB) [26:21]

The Hitch Hiker
1946-06-21 (6.6 MB) [28:51]