American criminal and Depression-era outlaw (1901-1934) who was one of the most wanted bandits in Oklahoma during the 1920s and 1930s; known as 'Mad Dog' or the 'Tri-State Terror,' he co-led a gang with Harvey Bailey that included many fellow Cookson Hills outlaws. Scarce vintage 3.5 x 5 postcard photo of Underhill in his prison uniform, with his prisoner ID number on his chest, signed and inscribed on the reverse in black ink, "To Mrs. Grace Baine, From, Wilber," adding his full name, the date, and his physical description above: "Wilber Underhill, July, 4th 1924, Age. 23. Height 6 ft., Wt. 174 1/2 lb.” In fine condition, with trimming to top edge and toning to reverse.
