Butterflies of Houston and southeast Texas.By John Tveten & Gloria Tveten.
Publisher's info page
John Tveten & Gloria Tveten. 1996. Butterflies of Houston and southeast Texas. University of Texas Press, Austin. xii + 292 pp.
"In this easy-to-use field guide, the Tvetens describe and illustrate more than 100 species of butterflies that live in Southeast Texas and can often be found across the state."