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 illustration has an infant wearing a bonnet with a pink ribbon and the caption "Our pet."