National String Instrument Corporation

The National String Instrument Corporation was an American guitar company, that first formed to manufacture banjos and then the original resonator guitars. National also produced resonator ukuleles and resonator mandolins. The company merged with Dobro to form the "National Dobro Company", then becoming a brand of Valco until it closed in 1968. An unrelated company was founded in 1989 with similar name, branding, and product line under the name National Reso-Phonic Guitars, but it bears no historical connection to this company.

National String Instrument Corporation

The National String Instrument Corporation was an American guitar company, that first formed to manufacture banjos and then the original resonator guitars. National also produced resonator ukuleles and resonator mandolins. The company merged with Dobro to form the "National Dobro Company", then becoming a brand of Valco until it closed in 1968. An unrelated company was founded in 1989 with similar name, branding, and product line under the name National Reso-Phonic Guitars, but it bears no historical connection to this company.