Signatures on back of dinner menu dated Feb. 22, 1889:

John W. Bemis
John P. Benson
Stephen Bonsal Jr.
Wm A Boring
A. L. Brockway
George Cary
J. Donaldson
Ernest Flagg
Juan Guillermo de Lavalle
Austin W Lord
Joseph H. McGuire
T R Plummer
Evans Preston
Louis de Sibourg
Edward L. Tilton
S. B. P. Trowbridge
Thornton Floyd Turner
Whitney Warren

Written in brown ink, with flourishes: Mr Josselyn