This product was sold by Dr, Moore Russell Fletcher. He was in business in Boston, Cambridge, and in Canada at various times. He was in business as a Doctor starting around 1837 and until at least 1888. In 1838 he invented Fletcher's Truss. His Turkish Hair Tonic was sale at least as early at 1875 and at least as late as 1888. I found Fletcher in the U.S. Census living in Boston in 1870 and Cambridge in 1887-1894.