Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Major Betram Hopkinson; Air Board Office, the Strand, W. C. Notes that qualified mathematicians and physicists who are not fit for active service can find employment at the Experimental Stations of the Royal Flying Corps. Therefore, encloses a note from Mr. J. E. G. Labey who, though classed C.l medically, has received a calling-up notice [not enclosed]. Details Mr. Labey's qualifications as a Mathematician and asks Major Betram Hopkinson s if he can help Mr. Labey get the war-related employment he seeks. 18 June 1917