Arnell; R.C. Wallace; G.E. Bourne; J.A. Macfarlane; George de T. Glazebrook; Clothier; D.W. Kerst; David A. Keys; W.B. Lewis; Lewis Louther; C.J. Mackenzie; A.G.L. McNaughton; Eric B. Paul; Charles Goodeve; V.G. Smith; Principal Wallace; John A. Wheeler; J. Tuzo Wilson
R.W. Boyle; W.L. Bragg; Lyman J. Briggs; C.G. Darwin; J.B. Collip; M.J. Kelly; W.J. Henderson; C.J. Mackenzie; G.C. Laurence; David A. Keys; W.E. Phillips; William Raymond concerning Gray's radar research in U.S - transfer of classified materials to Queen's.
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.