It was incorporated in 1917 as the Franklin Railway Supply Company. In 1954 they moved their N. A. Strand Division from Chicago to Baltimore. They diversified into the aerospace sector making the aluminum skin for airplanes.
In 1967, Aero-Chatillon Corporation purchased a controlling stake of the company. In 1969, with Franklin-Balmar remaining a division, Aero-Chatillon became Macrodyne-Chatillon Corporation through a merger with Macrodyne, Inc. and Shinn Industries, Inc., which became Macrodyne Industries in 1974.
- "Secrets emerge in Woodberry's industrial park". Baltimore Sun. May 2, 1994. Retrieved 2011-10-20.
The buildings were eventually acquired by the Franklin Balmar Co., which 50 years ago was a subcontractor on the Manhattan Project's atomic bomb.
- "Franklin Balmar Corp. Moves Facilities Here". Baltimore Sun. March 10, 1967. Retrieved 2011-10-20.
The firm is Franklin Balmar venerable but still known, technically profiitable but little used. For all its capabilities, the sales last year were $3,000,000 and ...
- "Franklin Balmar Seeks Aerospace Work". Baltimore Sun. March 10, 1967. Retrieved 2011-10-20.
The firm is Franklin Balmar venerable but still known, technically profitable but little used. For all its capabilities, the sales last year were $3,000,000 and ...
- "Franklin Balmar". Railway Age. 1965.
But Franklin is still in business as the Franklin Balmar Corp., with veteran supplier Floyd Coffin still its head. It got into the machining of outer wing skins for the aircraft industry and it began the production of the Balmar ...
- (8 February 1967). FRANKLIN FIRM CONTROL IS SOLD: Aero-Chatillon Gets 85% Of Company Stock, Baltimore Sun
- (29 March 1969). AERO-CHATILLON MERGER IS O.K.'D: Franklin Balmar's Parent Gets Two In Merger, Baltimore Sun
- Directory of obsolete securities, p. 15 (1991)