Copy letter from Robert William Frederick Harrison to Horace Darwin FRS 'Soiree. Ata recent meeting of the Soiree Exhibits Committee your suggestion that application be made to Mr O'Gorman of the Royal Aircraft Factory, to show some instruments, was approved, and I was instructed to ask whether you would, yourself, communicate with Mr O'Gorman, with a view to arranging an exhibit for May 7th. I enclose a form, on which particulars might be entered at the proper time.' 15 April 1913