Charles Sumner, his complete works, volume 18 (of 20)

Note 50 — ONE CENT POSTAGE, WITH ABOLITION OF FRANKING.

Reading edition

Debates, June 15 and December 18, 1837: Mirror of Parliament, cited in Encyclopædia Britannica, (8th edit.,) Vol. XVIII. p. 411.

Explore with AITake your curiosity a little further.