|Alternative reference number||NLB/53 p64|
|Title||Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to [forename illegible] Craddock Esq., 35 Oakhill, Wapping|
|Date||8 April 1916|
I have to acknowledge he reciept of your letter of April 5th and to inform you that no paper can bereceived by the Royal Society unless it be communicated by a Fellow of the Society. I therefore return the copy of your paper and diagrams'.