Fores's comic envelope no. 1. [A caricature of the Mulready envelope on the introduction of penny postage /
Fores,Messrs.
Leech, John,1817-1864.
Mulready, William,R.A.
London. : Published by Messrs Fores...,
[1840]
Evans, E.B.  The Mulready envelope and its caricatures,
Postal stationery