Some classics just never go out of style. Such is the case for the book “Butterflies and Moths: A Guide to the More Common American Species” by Robert T. Mitchell and Herbert S. Zim. Most field guides eventually go out of print and become unavailable over time as their information becomes outdated and new guides are produced. To my knowledge, this book has been in continuous print since it originally came out in 1964.
The original library hardcover version of this classic book!