Showing 685 to 696 of 11,961 results for "20th Century".
Collection: Audubon Camp Management Date: Dec 10th, 1951
Collection: Audubon Camp Management Date: Dec 28th, 1951
Cruickshank and Cadbury summarize the results of a survey of bird species observed at the Audubon Camp of Maine.
Collection: Audubon Camp Curricula Date: 1952
Field data sheets show the species observed during the 1952 bird census at the Audubon Camp of Maine.
Cruickshank summarizes bird observations made at various locations in Lincoln County, Maine.
Cruickshank notes observations of special interest. The observations for 1953 to 1955 have been added by hand.
Collection: Audubon Camp Curricula Date: 1952 - 1955
Collection: Audubon Camp Management Date: 1952 - 1968
Collection: Hog Island Images Collection Date: 1952
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