Sewall Pettingill

Olin Sewall Pettingill Jr. (Largely known simply as Sewall Pettingill, as he preferred to be called a member of the board of directors of the National Audubon Society from 1955 to 1974, Studying under zoologist Alfred O.) Gross, Pettingill conducted studies of the last three heath hens on Martha's Vineyard in 1927 with Gross and Thornton Burgess.

Tenured at Carleton College for 17 years, 3rd edition, 1956; 4th edition, 1970; 5th edition, 1985); 2013 pbk reprint of 4th edition A Guide to Finding Birds East of the Mississippi, 1951 A Guide to Finding Birds West of the Mississippi, 1953 Enjoying Maine Birds, 1960 Enjoying Birds in Upstate New York, 1963 Enjoying Birds around New York City, 1966 The Audubon Illustrated handbook of American Birds, editor-in-chief, 1968. The Bird Watcher's America, editor, 1974 Another Penguin Summer, 1975 My Way to Ornithology, 1992 Films Nature's Half Acre, 1951 Water Birds, 1952 The Vanishing Prairie, 1954 Islands of the Sea, 1960