The concern primarily published non-fiction works and was noted for facsimile reprints of older books.
By 1986, the firm had moved to Fairfield, New Jersey, where it appears to have remained.
[1] In the 1960s and 1970s, Augustus M. Kelley was the American publisher for books brought out in Great Britain by David & Charles.
David & Charles took out advertisements on the back page of The Railway Magazine; the first of these to mention Augustus M. Kelley was the September 1968 issue.
That advertisement announced: "In America almost all D&C railway, canal and industrial archaeology titles are published by Augustus M. Kelley Publishers, 24 East 22nd Street, New York, NY 10010".