- acoustic guitars
- resonator guitars
May Bell was a brand name used by Slingerland. Slingerland applied for trademark of the May Bell name in 1924, claiming to have first used it on June 29, 1923. The application indicates that Slingerland intended to use the May Bell brand for banjos, banjo mandolins, banjos, banjo ukuleles, wood ukuleles, mandolins, and guitars.