The Post office London directory for 1823 : being a list of 20,000 merchants, traders, &c. of London and parts adjacent ...

The Inner London letter post : a report on the letter post service in the area comprising the numbered London postal districts ; pres. to Parliament in purs. of sec. 83 of the Fair Trading Act 1973

(1980)

Post Office : return to an order of the Honourable The House of Commons, dated 1 March 1849 ; [returns of the number of chargeable letters passed through the London General and London District Post Office since the first general reduction of postage on 5th December 1839; together with the gross and net revenue arising from the Post-Office Department, and of money orders issued and paid, &c.]

Villiers, Charles, (1849)

The future of the Post Office : report together with the proceedings of the Committee

(1994)