product types:
- tube amplifiers
- acoustic guitars
- electric guitars
- lap steel guitars
Information:
The McKinney School of Music in Peoria, Illinois sold McKinney branded acoustic and electric lap steel guitars and amplifiers made by Valco in the 1940s and 1950s. Often these were sold as a matched pair.
Source: Vintage guitar magazine: 7 vintage sleeper amps (July 2017)