c. 1855-1856 Address Unknown, New York, New York.
1857 289 Broadway, New York, New York.
Snodgrass was recorded in one article and five advertisements two in the New York Daily Tribune and three time in the New York Herald. In the Photographic and fine Arts Journal (New York, New York) on January 1, 1856. His name appears in an article entitled the Photographic Galleries of America. Number One, New York. The author visited 69 Galleries in New York City. Snodgrass — Some of these specimens may pass as daguerreotypes. The grounds are very much clouded and the picture looks as though pasted on the plate. Improve! Improve!
The first advertisement appears on June 23, 1857 in the New York Daily Tribune (New York, New York). Twelve-Cent Ambrotypes.—3,000 taken daily by the new firm of Snodgrass & Co. Headquarters of Portraits of the People, on the progressive system and democratic principles—greater good to the mass. No. 289 Broadway.
The second advertisement appears on June 23, 1857 in The New York Herald (New York, New York). 12 Cent Ambrotypes, in Frames, Perfect and natural as life. 3,000 taken daily by the new firm of Snodgrass & Co., 289 Broadway.
The third advertisement appears on June 24, 1857 in the New York Daily Tribune (New York, New York). 12-Cent Ambrotype Portraits in natural colors to Life. 3,000 taken daily by the new firm of Snodgrass & Co. Established Pictures for the people on the cheapest system of art, employing 25 artists, at No. 289 Broadway.
The fourth advertisement appears on June 24, 1857 in The New York Herald (New York, New York). 12 Cent Ambrotypes Portraits, in Frames and natural colors, to the life. 3,000 daily, by Snodgrass & Co. New broom sweeps clean. 289 Broadway.
The fifth advertisement appears on June 26, 1857 in The New York Herald (New York, New York). Twelve Cent Ambrotypes Portraits, by 10 artists in whiskers, at the new gallery of Snodgrass & Co. Old wine in new bottles. 289 Broadway.
Snodgrass is recorded in Craig’s Daguerreian registry as possibly being active in 1855-1856 but is recorded here because of the first-hand account of the work and advertisements found in 1857. Interesting the 289 Broadway address is the same address as Silas A. Holmes and some of the terminology in the advertisements are the same that he uses. Holmes was also included in the same article, and it is unknown if they were associated together in anyway.
 Not all first names or complete addresses were recorded in article Craig’s Daguerreian Registry was used to assist in identification when possible first name and address were added.