Comprises: (Folder 1) Two maps showing the distribution of breeding colonies of larger birds on or near the coasts of the North Sea and English Channel, prepared for Bomber Command, R.A.F., with index to localities shown on the charts, n.d. [1940s] (Folder 2) Papers and reports relating to lead poisoning in mute swans in the Thames area, c.1978-1991 (some photocopies) …