Manhattan
Optical Co. Catalog, 1900, back cover
Gundlach Optical Co. (c.1885-1902)
Milburn Korona Co. (1894-acquired
by Gundlach in 1896)
Manhattan Optical Co., Cresskill, NY (?-1902)
Gundlach-Manhattan Optical Co., Rochester, NY
(1902 -
c.1926)
Gundlach Manufacturing Corp.
(c.1926)
Seebold Invisible Camera Co. (1928-?
bought Gundlach Mfg. Corp.)
The Gundlach Optical Co. made lenses only until they acquired the Milburn Korona Co. (which had a line of view cameras) in 1896. Gundlach continued to manufacture lenses (such as the Turner-Reich Convertible Anastigmat) and cameras. They merged with the Manhattan Optical Co. which brought in a line of mainly leather-covered red bellows cameras. The company was re-named by John E. Seebold in 1928.
Scans of number of catalogs can be found here. Scans of Gundlach and Manhattan catalogs are here.