Mainly comprises notes on aspects of aerial photography, with diagrams, photos etc. stuck in. On the front inside board are 'Instructions for Camera type "L"'/The Williamson Kinematograph Co. Ltd., London. Tipped in (now in accompanying slipcases) are ts. 'Notes on organization, equipment and training for photography', 'Notes on oblique photography', 'Standing instructions for photographic sections - home stations', printed 'Notes on photography as practised in the Royal Flying Corps in the B.E.F.' (24p) 1916, envelope of 'Diagrams [photos] issued by S.O.P.', etc.