The Swallowtail Butterflies of North America

Healdsburg, Ca.: Naturegraph Publishers, 1975. Large octavo in yellow color illus wraps; perfect bound; viii, 192 pages: illustrations; 22 cm, indexes; bibliographical references (pages 180-183) Minor wear to exterior; appears unread. Near fine(-) to very good(++). Paperback. ISBN: 9780879610388

Papilionidae -- North America -- Identification.