I. Androscoggin River, 1940 - 1983

This series contains studies, reports, raw data, and other information primarily documenting pollution and its control in the Androscoggin River. The series is arranged in several subseries reflecting the various efforts of Lawrance and others to study, document, and ultimately improve the river's water quality.

Most significantly, the series contains the annual reports produced by Lawrance from 1943 to 1977 as consultant and the Rivermaster. Additionally, there are his annual project reports produced from 1946 to 1959 for the National Council for Stream Improvement. The need for Lawrance's work, as well as some of the funding to support it, came from the three major paper mills, The Brown Company, The Oxford Paper Company, and The International Paper Company, which discharged unfiltered waste material into the river.