|Alternative reference number
|Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Messrs Adressograph Ltd.; 91-92 Shoe Lane, E.C.
|4 December 1918
|'I return herewith nine name plates of the Addressograph machine to be altered. The new address is in each case written on the plate, and I should be much obliged if you would have the corrections made as soon as possible and the plates returned.'