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Ecology equipment
Electrical tipping bucket
Electrical tipping buckets
Experimental Sugar maple grove
Foreign Operations Administration, March 1957-September 1957 (Box 101, Folder 22)
General, March-December 1957 (Box 10, Folder 6)
Personal Materials. Speeches, March 1957 - January 1959. (Box 2, Folder 10)
Plastic sap bag
Recorder house on experimental sugar maple farm
Testing sugar concentration of maple sap