Mortimer Thomson (1832 - 1875) was a journalist and humorist, one of the "bohemians" who gathered with Walt Whitman, Artemus Ward, Mark Twain, Adah Isaacs Menken and others at Pfaff's Cellar in Manhattan.
Gurney &amp; Son, Photographer
Cartes de Visite photograph (circa 1862) in my possession