Comprises: Bibliographical lists, drafts, correspondence, maps and photographs for paper “Some observations on the autumn migration of hirundines through the Austrian Alps” by M.T. Myres, c. 1951-[1953] Royal Radar Establishment memoranda by E.W. Houghton “Radar echoing areas of birds”, “The effect of changes in target trajectory on the wing-beat modulation pattern”, “Spring Migration at…