Signature Signed and dated in pen and black ink, below image left: George Biddle. 1952.
Marks None
Inscription Recto, bottom left corner, in black ink, in artist's hand: 8/70
Bottom left, in graphite, in artist's hand: "Happy Birthday to You." No. 131
Bottom left, in blue ink, in different hand: 63.105
Bottom right corner, in graphite, in different hand: $20
Verso: none