Louis Beckers is recorded in an advertisement in the Delaware Gazette (Delhi, New York) on April 7, 1847, in the partnership of Langenheim & Beckers, No. 201 Broadway, New York. They are the sole agency for the sale of Voiglander’s Daguerreotype Instruments and L. Beckers’ Chemicals.

Louis Becker is list in Craig’s Daguerreian Registry as being in Philadelphia but not in New York or in the partnership with the Langenheim Brothers.