Leslie Angel; ISBN 1555663516 - Pages: 247; Publisher: Spring Creek Press - Copyright © 2005; Condition: Paperback, as-new condition. Price: $12.00 + $4 S/H

"An essential reference for anyone seeking to make the most of their butterfly-watching time in Rocky Mountain National Park. Over 130 species of butterflies have been spotted in the park, one of the nation's premiere butterfly-watching sites." — from the back cover

Robert H. Barth and Robert E. Broshears; ISBN: 0030132762 - Pages: 646; Publisher: Saunders College Publishing - © 1982. Condition: Hardback, excellent, unused, "Advance Copy" sticker on inside front cover. Price: $10.00 + $6 S/H

This is one of the more popular beginning-level textbooks of invertebrate zoology in the 1970s and early '80s. In that era it was used in a large number of colleges and universities. Its coverage is comprehensive, from protozoans through echinoderms.

John A. Burton and Bruce Pearson; ISBN 0828906580 - Pages: 240; Publisher: Stephen Greene Press - © 1987; Condition: Hardback, as-new condition except for inscription on first page, no dust jacket. Price: $7.00 + $4 S/H

Beautiful full-color illustrations and very useful distribution maps. This would make a wonderful gift for a young person. As up-to-date today as when it was published.

Herbert W. Kale II and David S. Maehr; ISBN: 091092368X - Pages: 272; Publisher: Pineapple Press - © 1990. Condition: Paperback, excellent, unused, inscription on half-title page. Price: $4.00 + $4 S/H

For birders and artists who are interested in the avian flora of Florida and the Southeast, this is a beautiful book. The quality of the numerous color plates more than justifies the price of the book.

George C. Kent; ISBN 0801626498 - Pages: 414; Publisher: C. V. Mosby - © 1973; Condition: Hardback, as-new condition except for Review Copy sticker on inside front cover. Price: $5.00 + $4 S/H

This book is one of the standard comparative anatomy books in the country. The illustrations and b&w photographs are excellent and the labeling of the illustrations is extremely helpful when fumbling your way through the shark or the cat.

Tom and Pat Leeson, Photographers. ISBN: 0941831302 - Pages: 128; Publisher: Beyond Words Publishing - © 1988. Condition: Hardback, very small crease on dust jacket, otherwise as-new condition.

"This intimate look at the life of the American Eagle provides a unique visual experience of the power of the eagle and the delicate balance of nature in which it lives and survives. The color and season of this book unfolds to give the reader the essence of the eagle: flight, mating, nesting, nurturing of the young, play and repose." — from the jacket copy

William Mansell, Paintings by Gary Low. ISBN: 0688037070 - Pages: 176; Publisher: William Morrow and Co. - © 1980. Condition: Hardback, inscriptions on first and last pages, otherwise pristine condition. Price: $10.00 + $6 S/H

"The 27 most widely distributed American birds of prey are included and depicted in full color and will interest anyone concerned with their ecology. Chapters on falconry, the dangerous pesticides and food summaries for each bird, plus full-color paintings of the wing spreads of the immature and adult hawks make this book a treasury of information for the dedicated birder." — from the jacket copy

Paul A. Opler and Amy Bartlett Wright; ISBN: 0395791510 - Pages: 540; Publisher: Houghton Mifflin - Copyright © 1999. Condition: Paperback, excellent, unused. Price: $3.00 + $4 S/H

"This second edition, featuring 44 color plates, 110 color photos, and new color range maps, covers 590 species of butterflies found in western North America." — from the back cover

Robert W. Pennak; No ISBN - Pages: 769; Publisher: Ronald Press - © 1953. Condition: Hardback, very good, but with inscriptions on first page, no dust cover. Price: $10.00 + $6 S/H

For anyone interested in freshwater invertebrates of the U.S., this book is the model for future study. Although it is a taxonomic catalog of species, it goes into considerable depth in its descriptions of the major phyla. It is both a textbook and laboratory book.

Jay Ellis Ransom, editor; ISBN 0061817155 - Pages: 809; Publisher: Harper & Row - © 1981; Condition: Flexible leatherette cover, never used, excellent condition except for inscription on first page. Price: $5.00 + $4 S/H

This book includes beautiful illustrations, color plates, and complete descriptions of habitat and range of 1800 species of birds, mammals, reptiles, amphibians, fish, mollusks, and invertebrates west of the Mississippi River.