The Fred Gretsch Mfg. Co.
60 Broadway, Brooklyn 11, NY (1955)

The Fred Gretsch Company, Inc.
60 Broadway, Brooklyn, New York 11211 and Chicago Ill. (1968)

Gretsch
1801 Gilbert Avenue, Cincinnati, OH 45202 (1970s)

Gretsch Guitars
8860 E. Chaparrel Road, Suite 100, Scottsdale AZ 85250-2610  (2006)

Gretsch is an instrument maker producing guitars, drums, and other instruments.

They also sold several amplifier models, some of which were manufactured by Valco.

Excerpts from Wikipedia:

Gretsch was founded in 1883 by Friedrich Gretsch, a German immigrant, who opened an instrument shop on 128 Middleton Street in Brooklyn, New York in 1883. His shop was designed for the manufacture of banjos, tambourines, and drums. The operation moved to South 4th Street in 1894. In 1895, Gretsch died at the age of 39, and company was taken over by his wife and fifteen year-old son Fred.

Fred Gretsch expanded the business, adding Gretsch Building #1 at 109 South 5th Street in 1903, Gretsch Building #2 at 104-114 South 4th Street in 1910, and a new ten-story Gretsch Building #4 at 60 Broadway in 1916. The company ultimately owned or operated six properties in the immediate area, including a warehouse on Dunham Place. Gretsch Building #4 was owned by the Gretsch family until 1999. Guitar production by the Gretsch Company began in the early 1930s.

Fred Gretsch Sr. handed over the family business to his son, Fred Gretsch Jr., after retiring in 1942. Soon after taking over, Fred Jr. left to serve in WWII as a Navy commander, leaving the business in the hands of his younger brother, William Walter "Bill" Gretsch. Bill Gretsch died in 1948 and the company was again run by Fred Jr.

Fred Gretsch never found a suitable successor, and in 1967 Gretsch was sold to Baldwin Pianos, becoming a subsidiary of that firm. Mid-1969, Baldwin moved Gretsch instrument manufacturing operations from Brooklyn to a plant in DeQueen, Arkansas.

In 1985, Gretsch was bought back by Fred W. Gretsch, nephew of Fred Gretsch Jr. and son of the late William "Bill" Gretsch. At that time, drum production was relocated to Ridgeland, South Carolina, where it remains today.

In late 2002, Gretsch and the Fender Musical Instruments Corp. reached an agreement giving Fender most of the control over marketing, production, and distribution of guitars, with the Gretsch family retaining ownership of the company.