| John Plumbe Jr. Plumbe National Daguerrian Gallery and Photographic Depots 1845 Advert Google Books LL/35326 Sheldon & Co.'s Business or Advertising Directory: Containing the Cards, Circulars, and Advertisements of the Principal Firms of the Cities of New-York, Boston, Philadelphia, Baltimore, &c., &c. (New York: John F. Trow & Company, 1845), p.43.
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