Overall: 4 3/16 x 3 11/16 in. ( 10.6 x 9.4 cm )
signature: lower right: "E. C. Potter A.N.A."
Signed and inscribed at lower right in graphite: "E.C. Potter A.N.A."
Gift of Mr. Whitney Hartshorne
Due to ongoing research, information about this object is subject to change.