Jackson-Guldan was a violin company based in Columbus, OH between the 1920s and the 1960s. When lap steel and Hawaiian guitars became popular in the late 1930s and early 1940s, Jackson-Guldan introduced their own lap steels with amplifiers. Most models are small with low wattage and limited features. Examples seem to be similar to Oahu and early Gibson EH models. Any further information on Jackson-Guldan can be submitted directly to Blue Book Publications.
Amplifiers previously produced in Columbus, OH between the 1940s and 1960s.