John L. Bull, an ophthalmologist, educator and author, passed away on August 11. He was 92 years old. Born on February 28, 1914, Bull was a research assistant at the American Museum of Natural History. He led bird-watching tours in New York and as far away as Egypt and the Galapagos Islands throughout the 1960's and 1970's, taking exacting notes and eventually writing guidebooks to New York State birds, including 1964's Birds of the New York Area and Birds of New York State, published a decade later. His 1977 collaboration with John Farrand Jr., National Audubon Society Field Guide to North American Birds: Eastern Region, used color photographs and was a departure from previous guidebooks. He collaborated with his wife on Birds of North America: Western Region: A Quick Identification Guide for All Bird-Watchers in 1989. Bull retired from the museum as a field associate in 1983. He is survived by his wife, Edith, of Far Rockaway; his daughter, Doris Kraus, a marine biologist and writer; and three grandchildren.