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Bill Freedman fonds Acid rain
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Evaluation of loading of sulphate and heavy metals along a S-SE transect centering on Sudbury, Ontario ; Evaluation of sulphate and heavy metal loading rates and total sulphation as affected by forest canopies near Sudbury, Ontario ; Effects of smelter emissions on surrounding forest plant communities near Sudbury, Ontario : [manuscript and correspondence]

File contains three abstracts written by Freedman for presentations for the Workshop Meeting to Consider Methods Involved in Studies of Acid Precipitation to Forect [sic] Ecosystem. Edinburgh, United Kingdom. 19-23 September 1977. Session titles are: 1B: Evaluation of Atmospheric Inputs; 2. Throughfall and Stemflow; 3. Measurement of Effects. File also includes hand-written data and correspondence.

Photographs of the effect of acidification of amphibian larvae

File contains 40 photographs taken and collected by Bill Freedman between 1982 and 2000. Photographs show the effects of acidification and acid precipitation on ecosystems and wildlife. Photographs show examples of drain lakes, as well as the effects of acidity on the development of amphibian larvae (with pH levels added when available).