1843 263 Grand Street, Columbia Hall, New York, New York.
1845-1854 103 Bowery, New York, New York.
1851-1855 559 Broadway, near Prince Street, New York, New York.
1855-1856 477 Broadway, New York. New York.
1857 43 Fulton Street, Brooklyn, New York.
1857 103 Bowery, New York, New York.
1858 469 Broadway, New York, New York.
1860 398 Bowery, New York, New York.
New York City Directories
1840/1841—engineer—88 Lewis—h-70 Lewis.
1841/1842—gunsmith—50½ Houston—h-18 ave. D.
1842/1843—gunsmith—50½ [Houston]—h-55 Houston.
1845/1846—daguerreotype—103 Bowery—h-302 Rivington.
1847/1848—daguerreotype—103 Bowery & 226 Bleeker—h558 Fourth.
1848/1849—daguerreotype—103 Bowery—h-558 Fourth.
1849/1850—daguerreotype—103 Bowery—h-644 Fourth.
1850/1851—daguerreotype—103 Bowery—h-644 Fourth.
1851/1852—daguerreotype—103 Bowery—h-188 E. 19th.
1852/1853—daguerrean—103 Bowery & 559 Broadway—h-188 E. 19th.
1853/1854—daguerreian—103 Bowery & 559 Broadway—h-188 E. 19th.
1854/1855—daguerrean—559 Broadway—h-180 E. 19th.
1855/1856—daguerreian—477 Broadway—h-75 E. 40th.
1856/1857—daguerreotypist—477 Broadway—h-75 E. 40th.
1858/1859—daguerreotypes-469 Broadway—h 145 E. 32d.
1859/1860—no occupation listed—h-145 E. 32d.
1860/1861—photographs—398 Bowery—h-142 E. 33d.
William R. Knapp is recorded in one advertisement that ran from October 21 to November 2, 1843 in the New York Daily Tribune (New York, New York). Daguerreotype Miniatures are taken in a superior style by Wm. R. Knapp, at Columbian Hall, No. 263 Grand street, with all the latest improvements, including color. Persons wanting a correct likeness of themselves or friends are respectfully solicited to call and examine specimens. Pictures are taken in cloudy, stormy and fair weather. Prices including case, from $1.50 to $4. Hours from 8 A. M. until 4 P. M.
William R. Knapp is recorded in other photographic directories. But is included here in part with new information. The activity dates are derived from the city directories and newspaper accounts of over 30 typed pages that have not been included in the blog.