For years Albert Hazen Wright and Anna Allen Wright traveled extensively, attempting to observe every species of snake in North America in its natural surroundings and collecting data and live specimens. Their exhaustive research resulted in a famous two-volume sourcebook, first published in 1957. Abundantly and painstakingly illustrated by the authors, this personalized natural history organizes for ready reference a wealth of information on American and Canadian snakes.

Across the two volumes of Handbook of Snakes of the United States and Canada are accounts of more than three hundred...