In 1931 Gibson introduced its first versions of the Dreadnought acoustic guitars, branded by C. F. Martin & Company.
Wider and with a more powerful sound than all the other flattop guitars on the market, they were immediately successful.
[5] The Gibson Advanced Jumbo was favored by 1930s players such as Bob Baker, a singing cowboy.
[7] According to one collector, "The Advanced Jumbo was probably the best flattop in Gibson's entire history, a wonderful guitar".
[4] Gibson's Ray Whitley-branded "Recording King", introduced in 1939, was a similar sized flattop guitar with rosewood back and sides and a sunburst spruce top.