National Audubon Society Field Guides is a 18-book series with 18 released primary works first released in 1977 with contributions by National Audubon Society, John L. Bull, John Farrand, Charles W. Chesterman, Kurt E. Lowe, John L. Behler, F. Wayne King, Richard Spellenberg, Lorus Johnson Milne, Margery Milne, Elbert L. Little, John O. Whitaker Jr., Robert Michael Pyle, Ida Thompson, David McWilliams Ludlum, Mark R. Chartrand, Jane Friedman, and Peter Alden.