Fonds contains records created by William Threlfall that pertain primarily to the diseases, virology, and parasitology of birds and waterfowl. Records are thesis, research notes, and articles.
File contains 22 photographs taken by Bill Freedman at Alexandra Fiord and Sverdrup Pass, Ellesmere Island, taken over two summers in 1979 and 1981. Photographs show Baird's sandpiper nesting sites.
File contains 10 photographs taken by Bill Freedman at Smoking Hills (near Cape Bathurst), Northwest Territories, in 1975. Photographs show Rough-legged hawk chicks, Northern pharalope, and Whistling swan, and Arctic loon.
File contains 170 photographs taken by Bill Freedman in 2003, at Alexandra Fiord, Ellesemere Island. The photographs show nesting habits of Parasitic jaeger, eider, bunting, and other species, as well as showing scenery and flora of the area in late-June, early July.
File contains 56 photographs taken by Bill Freedman at Alexandra Fiord, Ellesmere Island, on three occasion, between 1974 and 1981. Photographs show Old squad nesting sites.
File contains 70 photographs taken by Bill Freedman at Alexandra Fiord, Ellesmere Island, over successive summers in 1980 and 1981. Photographs show Arctic tern, on the ground, at nesting sites.