Copy letter from Robert William Frederick Harrison, to Sir Robert Hadfield, Fellow of the Royal Society Harrison should be glad if they would arrange to set up the exhibit they have kindly promised for the Soiree, on the morning of 17 July. Similar letters were sent to; Henry Reginald Arnulph Mallock, Charles Vernon Boys, [Charles Thomson Rees] Wilson, Robert Mond, Professor Garstang. 6 July 1912