Activist (1813–1888) who founded the ASPCA in 1866. ALS, one page, 5 x 5.75, no date. A brief letter of recommendation. In full: “The bearer of this, Benjamin C. Hall, is a native of Boston, Mass, and in every respect worthy of your confidence. Could his want of experience be tolerated for a time, I feel certain that he would prove a real acquisition to your famous house.” Intersecting folds, trimmed top edge, thumb print to part of the signature, and a pencil notation to the bottom, otherwise fine condition. RRAuction COA.