|Alternative reference number||NLB/55 p272|
|Title||Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to J. Howard Mummery Esq.|
|Date||29 April 1918|
Referring to your letter of April 27th, we shall be able to show your lantern slides but we have no microscopes here at disposal. You may like to bring one of your own, however.'