"Constructive Conscious Control". Issue 3986 (29th May 1937) - Bruce-Porter, Bruce; Caldwell, J. R.; Dick, J. H.; Douglas, Mungo; Duffett, H.; Ensor, C. A.; Graham, W. J.; Gunn, A. Rugg; Jakins, Percy; Kerr, J.; Ligat, D.; McDonagh, J. E. R.; et al.