Complex sentence: They were also a frequent presence on NBC and WOR radio in New York in the 1920s and 1930s and recorded on Brunswick, Columbia, and Cameo records in the 1920s.
Split into simpler sentences: They were also a frequent presence on NBC and WOR radio in New York in the 1920s and 1930s. They recorded on Brunswick, Columbia, and Cameo records in the 1920s.