Portrait of Keen wearing a suit and tie, sitting in a chair with his left arm resting on the chair arm and his right hand in his lap. By Chandler. Presentation inscription.
Publisher: Philadelphia.
Bookplate: An elderly man in a long coat examines the tongue of a mask. A table with instruments and books is to his right. Curieux es Arts. Artiste es Cures.
Bookplate: A young man holds a jar aloft. To his lower right and left are heraldic shields of Hohenfeld and Mainbernheim, respectively. On upper left and right are anatomic cross-sections.