Trade card for Horsfords Acid Phosphate, Rumford Chemical Works, 58, 59, & 60 South Water Street, Providence, Rhode Island, undated
Description:
The product is for treating mental and physical exhaustion and dyspepsia. The text on the verso reads "Prepared according to the directions of Prof. E.N. Horsford of Cambridge, Mass." The product is sold by Thomas B. Nichols, apothecary, 159 1-2 Essex Street, Museum Building, Salem, Massachusetts.
