1840                320 Broadway, New York, New York.

1841                Address Unknown, New York, New York.

1842-1843       1 Wall Street, New York, New York.

1844                60 Maiden Lane, New York, New York.

1845-1847       23 Liberty, New York, New York.

1848                18 Cortlandt, New York, New York.

1849                50 Broadway, New York, New York.

1850-1854       141 Maiden Lane, New York, New York.

1855-1856       98 Maiden Lane, New York, New York.

1856-1858       143 Maiden Lane, New York, New York.

1859-1860       Address Unknown, New York, New York.

Dr. Lewis Feuchtwanger was recorded in the New York City Directories from 1840-1860, One announcement and twelve advertisements in the New York Herald (New York, New York.)  New York City Directory.  (New York, New York.) 

1840/1841.  Apothecary and Operative Chemist, 320 Broadway.  H-21 White.

1841/1842.  Chemist, Address Unknown.  H-21 White.

1842/1843.  Chemist, 1 Wall.  H-21 Wall.

1843/1844.  Chemist, 1½  Wall.  H-21 Wall.

1844/1845.  Chemist, 60 Maiden Lane.  H-21 Wall.

1845/1846.  Chemist, 23 Liberty.  H-21 Wall.

1846/1847.  Manufacturing Chemist, 23 Liberty.  H-21 Wall.

1847/1848.  Chemist, 23 Liberty.  H-21 Wall.

1848/1849.  Chemist, 18 Cortlandt.  H-21 Wall.

1849/1850.  Chemist, 50 Broadway.  H-190 Bleecker. 

1850/1851.  Chemist, 141 Maiden Lane.  H-190 Bleecker.

1851/1852.  Chemist, 141 Maiden Lane.  H-190 Bleecker.

1852/1853.  Chemist, 141 Maiden Lane.  H-190 Bleecker.

1853/1854.  Chemist, 141 Maiden Lane.  H-190 Bleecker.

1854/1855.  Chemist, 141 Maiden Lane.  H-190 Bleecker.

1855/1856.  Physician, 98  Maiden Lane.  H-190 Bleecker.

1856/1857.  Physician, 98 Maiden Lane.  H-190 Bleecker.

1857/1858.  Chemist, 143 Maiden Lane.  H-88 W. 25th.

1858/1859.  Chemist, 143 Maiden Lane.  H-88 W. 25th.

1859/1860.  Drugs, Address Unknown.  H-88 W. 25th.

1860/1861.  & Son, (Joseph W.) Drugs, 42 Cedar, H-18 W. 35th.   

The announcement appeared on January 31, 1843. Dr, Feuchtwanger’s advertisement of Drugs, Chemicals, Dyes, Copavia Capsules, Extract of Logwood, Extract of Quercitron Bark, Daguerreotype and Electrotype Apparatus   Chemicals, Acids, Lunar Caustic, German Silver, Polishing Putty, &c.  see 4th page.

The first advertisement appeared on January 31, 1843.  Drugs, Dyes, Chemicals, Poisons, German Silver, &c., &c., &c.—Dr. Feuchtwanger inform his numerous friends and customers of the neighborhood and abroad, that he will furnish Acids of every description…Daguerreotype and Electrotype Apparatus, with its appertaining chemicals…For sale by Dr. Lewis Feuchtwanger, 1 Wall st.

The second advertisement appeared on August 22, 1852.  Fly Paper, Daguerreotype Chemicals, Metals, &c.—Bleached Shellac, Disinfecties Liquid Chloride Soda, Sulphate Ammonia, Oil Colors. Araion Flowers, Cyanide Potassium, Bromine, Iodine, Chloride Iodine, Fumigating Pastilles, Pate de Reynauld, Kreosete, Zaffre, Manganese, Potassium, Gallic Acid.  Sponge Cloth.  All the goods warranted pure and for sale by Dr. L. Feuchtwanger, 141 Maiden lane.

The third advertisement appeared on February 4, 1853.  To Daguerreotypists, Steel Workers, Dentists, fireworkers, glassmakers, &c.—Bromine, iodine, chloride gold, hyposulphide, soda, cyanide, potassium, Vienna lime, English rouge,… L. Feuchtwanger, 141 Maiden lane. 

The fourth advertisement appeared on May 28, 1853.  To Daguerreotypist, Pyrotechnist, Glass makers, dentist, electroplaters,–Bromine, Iodine, hyposulphide soda, best English rouge, nitrate strontian, and harytachlorate of potash, zaffre, oxides of uranium, cohalt…Dr. L. Fruchtwanger, 141 Maiden lane.

The fifth advertisement appeared on June 1, 1853.  To Daguerreotypist, Pyrotechnists, Glassmakers, dentist, electroplaters,–Bromine, iodine, hyposulphide, best English rouge, nitrate strontian, and baryta, …Dr. L. Feuchtwanger, 141 Maiden lane.

The sixth advertisement appeared on August 11, 1854.  Daguerreotype Chemicals Very Cheap, wholesale and retail—Bromine, German and French, in sealed cans; fluorie acid, resublimed iodine, English hypesulphide soda, redistilled quicksilver, rouge, gallie and acids, plumbage, cyanide and iodide potassium, chloride, gold, &c., &c.; platina, nickel, bismuth, &c., for sale by Dr. L. Feuchtwanger, 141 Maiden lane.

The seventh advertisement appeared on October 22, 1854.  To Daguerreotypist, Electrotypists, Druggist, and Liquor dealers—a large stock of chemicals just landing: Bromine, iodine, hypo sulphide soda, chloride gold, salts gold, cyanide potassium, nitrate oxide and cyanide silver, carmine and rouge, plumbago, distilled quicksilver, &c….

The eighth advertisement appeared on August 6, 1855.  Cognac Oils, Essences Gin, Jamaica and St. Croix rum, apple, peach and cherry brandy, whiskey and port; patent medicines, essential oils, photographic, daguerreotype and electrotype chemicals, and all medals, for sale by Dr. L. Feuchtwanger, 98 Maiden lane.

The ninth advertisement appeared on September 2, 1855.  Daguerreotype and Photographic Chemicals and liquor flavoring, bromine, iodine, cyanide potassium, nitrate silver, pure ether, pyrogallic, sulphuric and acetic acids, iodides and bromides, ammonium, cadmium, colodion, hyposulphide soda, best and cheapest cognac oil, Otard and Rochelle brandy, peach, cherry, apple and prune essences, gin, rum, and whiskey, for sale by Dr. L. Feuchtwanger, 98 Maiden lane.

The tenth advertisement appeared on March 18, 1856.  To Liquor Dealers, Wholesale Grocers, Electrotypists and Photographers, &c.—Samples of liquors prepared from the best imported cognac oil, Jamaica and St. Croix rum, Holland gin, Monongahela and Scotch whiskey, peach, apple, cherry and raspberry brandies, and all necessary materials; oils peppermint, lemon, orange, sassafras, almonds and wintergreen; materials for all arts—daguerreotype, ambrotype and photographs; chemicals, such as bromine, zodion, salts gold, filtering paper, &c…. by Dr. L. Feuchtwanger, 98 Maiden lane.

The eleventh advertisement appeared on June 6, 1856.  Chemicals for the Daguerreotype and Ambrotypes, essential oils, best cognac oil, fireworks glassmakers and electrotype materials, at wholesale prices for sale by Dr. Feuchtwanger, 143 Maiden lane.

The twelfth advertisement appeared on July 7, 1856.  To Sojourning Country Merchants, Grocers, druggists and artizans.—Best imported white and green Cogniac oil, in original packages; essences: rum, gin, whiskey, apple, peach, cherry and raspberry brandy; oils:  lemon bergamot, sassafras, wintergreen, pimento, Melissa, juniper and caraway.  Ambrotype, photographic and daguerreotype materials and metals; gumarabic, carmine, ultramarine, china clay, varnishes, and patent medicines; Persian insect powder, fly paper, &c., for sale by Dr. Feuchtwanger, 143 Maiden lane.

Lewis Feuchtwanger is recorded in Craig’s Daguerreian Registry in 1856/1857.