Ma Perkins (sometimes called Oxydol's Own Ma Perkins) is an American radio soap opera that was heard on NBC from 1933 to 1949 and on CBS from 1942 to 1960. Between 1942 and 1949, the show was heard simultaneously on both networks. During part of its run on NBC, that network's coverage was augmented by use of transcriptions. Beginning April 1, 1935, nine stations broadcast the transcriptions. Oxydol dropped its sponsorship in 1956.The program continued with various sponsors until 1960. Ma Perkins is widely credited with giving birth to storytelling and content-based advertising.