In 1891, Gundlach offered six
field-type lens formulae, five of which were rapid rectilinear types and
one single achromatic type. They were the:
Gundlach Rapid Rectigraphic Lens,
Gundlach Perigraphic Lens,
Gundlach Wide Angle Lens,
Gundlach
Star Lens,
Gundlach Star Wide Angle Lens and
Gundlach Single Achromatic Lens.
References:
Illustrated Catalogue of Photographic Apparatus,
C.H. Codman & Co. (Boston, MA), June 1886, p. 27
How to Make Photographs and Descriptive Price List,
Scovill Mfg. Co. (New York, NY), distributed by
C.H. Codman & Co. (Boston, MA), April 1887, p.
51-52
Scovill Manf'g Co. Catalogue Photographic Goods, June, 1887, David
Tucker & Co. (Buffalo, NY), June, 1887, pp.63-64
The American Annual of Photography and Photographic Times Almanac for
1888, C.W. Canfield, ed.; Scovill Mfg. Co. (New York, NY), copyright
1887, ads p. 15
How to
Make Photographs and Descriptive Price List, Scovill Mfg. Co. (New
York, NY), May 1888, pp. 45-46
How to Make Photographs and Descriptive Price List, Scovill Mfg.
Co., distributed by John Wanamaker (Philadelphia, PA), June 1888, pp.
45-46
How to Make
Photographs and Descriptive Price List,
Scovill Mfg. Co. (New York, NY), November 1888, pp. 46-47
The International Annual Anthony's Photographic Bulletin, Vol. I,
1889, W. J. Harrison
and A. H. Elliot, eds., E. & H. T. Anthony & Co. (New York, NY), ads
p. 37
How to Make Photographs and Descriptive Price List,
The Scovill & Adams
Co. (New York, NY), 1890, p. 52
Illustrated Catalogue of Photographic Apparatus,
Rochester Optical Co., Rochester, NY,
June 1890, p. 34
Illustrated Catalogue of Photographic Lenses, Sixth Edition,
Gundlach Optical Co., (Rochester, NY), dated June 1891, p. 10
How to Make Photographs and Descriptive Price List,
The Scovill & Adams
Co. (New York, NY), January
1891, pp. 54-55
How to Make Photographs and Descriptive Price List,
The Scovill & Adams
Co. (New York, NY), distributed by Sargent & Co. (Cleveland, OH), April
1891, p. 55
How to Make Photographs and Descriptive Price List,
The Scovill & Adams Co. (New York, NY), distributed
by Horgan, Robey & Co. (Boston, MA),
January 1892, pp.
56-57
How to Make Photographs and Descriptive Price List,
The Scovill & Adams
Co. (New York, NY), abt. June 1892, pp. 58-59
1892 Illustrated Catalogue of Photographic Apparatus,
Rochester Optical Co. (Rochester, NY), 1892, p.
45
Descriptive Catalogue and Price List of Photographic Apparatus,
E. & H.T. Anthony & Co. (New York, NY), November 1893, p.18
The International Annual of Anthony's
Photographic Bulletin Vol. VII 1895,E.
& H.T. Anthony & Co. (New York, NY), 1894, ads p.
20
Catalogue of Photographic Goods and All
Articles Pertaining to Photography,
The Scovill & Adams Co. (New York, NY), undated c.1895, p. 35
Catalogue of Photographic Apparatus, Rochester Optical Co.
(Rochester, NY), May 1897, p. 76
Illustrated Catalogue of Photographic Equipments and Materials for
Amateurs, E. & H.T. Anthony & Co. (New York, NY), February, 1898,
pp. 53-54
Illustrated Catalogue of Photographic Equipments
and Materials for Amateurs, E. & H.T. Anthony & Co. (New York, NY),
November, 1898, p. 48