1855 303 Broadway, New York, New York.
1855. New York City Directory. (New York, New York.) 1855/1856, Published by John Fowler Trow.
DeGuinon & Stever, Daguerreotypes, 303 Brooklyn.
1855 June 13. The New York Herald. (New York, New York.) June 13, 1855, Whole No. 6865, P. 7.
A Rare Chance Is Now Offered To An Enterprising person with small capital, to purchase very low, a first class photograph and daguerreotype gallery, now doing a splendid business, and one of the best locations in the city; the parties now interested are going to Europe. Inquire De Guinon & Steven, (sic.) 303 Broadway, corner of Duane street.
1855 June 21. The New York Herald. (New York, New York.) June 21, 1855, Whole No. 6873, P. 6.
A Rare Chance—For Sale, Or A Partner taken.—One of the partners of the photograph and daguerreotype establishment, No. 303 Broadway, is about going to Europe, and a rare chance is offered to a person with small capital, to buy out the establishment, or to join the remaining partner in conducting the business. A knowledge of the business not requisite, as the remaining party is an old daguerreotypist. Inquire De Guinon & Steven, (sic.) 303 Broadway.