He first appeared as a daguerreian at 16 Buffalo Street, fourth floor, Rochester, N.Y., in 1845-1846. His residence was listed at 16 Lancaster St. He was not listed in subsequent Rochester directories.
In 1847-1848, Frederick J. and J.M. Clark were listed as daguerreians as Clark & Brother at 88 Genesee St., Utica, N.Y. Alternately the address was noted as the Law Buildings or the Franklin Building, third story. In the same year, the pair were reportedly in business as Clark Brothers. on Tremont Row, Boston, Mass.
From 1848 to 1854, Clark Brothers were listed as daguerreians at 128 Genesee St., third story, Utica, N.Y. They also offered instruction and stock for sale.
In 1850, the pair opened a New York City gallery. In 1850-1851 the firm was listed alternately in Utica as either F.J. Clark & Brother, or J.M. Clark & Brother.
Another source reports the mention of the daguerreian firm of Clark Brothers and B.L. Higgins on Tremont Row, Boston, Mass., in 1850-1851.
In the same year, J.M. Clark & Brother was also listed as daguerreians in Salina, N.Y. In the same year, J.M. Clark & Brother was also listed as daguerreians in Syracuse, N.Y., upstairs at 6 Franklin Buildings, Genesee Street.
One of the brothers, probably John M., is in all liklihood the "Clark" noted with daguerreotype rooms in Ithaca, N.Y., in 1851. This gallery, operated in partnership as Lawler (Lawyer) and Clark, was located at 37 Oswego Street.
In 1851-1852 it was noted that the Clark Brothers' rooms in Syracuse were occupied by B.L. Higgins. In 1854, the Clark Brothers Syracuse gallery was reportedly purchased by George N. Barnard, when he moved from Oswego, N.Y.
Sometime prior to December, 1853, at their Utica gallery, the Clark Brothers apparently trained and employed Andrew H. Dudley as a daguerreian. From January to October, 1855, Dudley advertised in Clinton, N.Y. as the operator of a branch daguerreian gallery for the Clarks.
From 1851 to 1853, J.M. Clark was listed as a daguerreian at 551 Broadway, New York City, in business as Clark & Brother. His residence was listed at the same address. This is the last listing for the firm in New York City. On October 1, 1851, an advertisement offered to let the firm's rooms for a period of 12 to 18 months.
In March, 1852, the gallery in Ithaca, N.Y. was burned out.
In 1853, J.M. Clark announced he had returned from his gallery in New York City, and took over the rooms at the Franklin Building, over William E. Abbott & Co.'s store, in Syracuse. This was the last yearly listing for the firm. In January, 1854, G.N. Barnard acquired the firm's gallery in Syracuse.
In 1854-1855, F.J. and J.M. Clark were listed in business as Clark Brothers, over 171 Genesee St., Utica. This was the last listing in the Utica directories.
This was probably the same J.M. Clark listed as a daguerreian in Elmira, N.Y. in 1859, and the same J.M. Clark listed as a daguerreian in Rushford, N.Y., in 1859.
It is also probable he was also the John M. Clarke listed as a photographer in Elmira, N.Y. in 1860. There his gallery was located at the corner of Lake and Carroll Streets, and he lived on Columbia near Lake. The mercantile index notes him as a daguerreian.
Notes: a whole plate daguerreotype of a Gothic cottage, with a lady, two or three boys and a dog on the steps was stolen from the Clark Brothers gallery, date and location unknown.