W.H.R.Rivers, Instinct and the Unconscious — Preface (1920)
“ I am greatly indebted to the Medical Research Committee (now the Medical Research Council) for the assistance which made it possible for me to work at Maghull and with the Royal Air Force. I am glad also to express my thanks to the Medical Department of the R.A.F. for the opportunity of acquiring experience in the varied psychological problems presented by Aviation in time of war, and to my colleagues in that Force for their help in making use of this experience. ”
