Mainly regarding Gray's participation in WWII (research + recruitment of scientists and students) + additional correspondence. R.W. Boyle; K. Ellis; G. Antonoff; R.H. Fowler; Lester Cooke; E.F. Burton; J.A. Fleming; Robert H. Hay; J.T. Henderson; H.F.H. Hertzberg; John F. Hinds; D.A. Keys; S.P. Eagleson; C.J. Mackenzie; A.G. MacLahlan; Victor Morin; Stuart.
Correspondence mainly concerning war and Gray's research work for the war effort. Arthur G. Ward; G. Krotkov; Harold W. Harkness; J.F. Logan; J.A. McRae; L.A. Munro; Arthur C. Neish; M. Pochon; Revell; Edward G. Taylor; Principal Wallace.
David A. Keys; Louis V. King; A.B. Macallum; L.W. McKeehan; W.E. McNeill; O'Leary; H.E. Reilly; R. Winckworth; Rutherford Chedwick Ellis; Bill Schneider; D. Seymour; Alfred Stansfield; John D. Stewart; Rose Stewart; Hugh Webster;