1.
 |  | Title: A Field Guide to Eastern Forests North America by John C. Kricher, Gordon Morrison, John Kricher, National Audubon Society, National Wildlife Federation, Roger Tory Peterson Institute ISBN: 0395928958 Publisher: Houghton Mifflin Company Pub. Date: 15 October, 1998 List Price: $20.00 Amazon.com Price: $14.00 |
2.
 |  | Title: A Field Guide to Eastern Trees (Peterson Field Guides) by George A. Petrides, Janet Wehr, National Audubon Society, National Wildlife Federation, Roger Tory Peterson Institute ISBN: 0395904552 Publisher: Houghton Mifflin Company Pub. Date: 15 July, 1998 List Price: $19.00 Amazon.com Price: $13.30 |
3.
 |  | Title: A Field Guide to Atlantic Coast Fishes: North America by C. Richard Robins, G. Carleton Ray, John Douglass, Rudolf Freund, National Audubon Society, National Wildlife Federation, Roger Tory Peterson Institute ISBN: 0395975158 Publisher: Houghton Mifflin Company Pub. Date: 01 March, 1999 List Price: $20.00 Amazon.com Price: $14.00 |
4.
 |  | Title: A Field Guide to Warblers of North America by Jon Dunn, Kimball L. Garrett, National Audubon Society, National Wildlife Federation, Roger Tory Peterson Institute, Larry O. Rosche ISBN: 0395783216 Publisher: Houghton Mifflin Company Pub. Date: 01 September, 1997 List Price: $20.00 Amazon.com Price: $14.00 |
5.
 |  | Title: A Field Guide to Western Medicinal Plants and Herbs by Steven Foster, Christopher Hobbs, National Wildlife Federation, Roger Tory Peterson Institute ISBN: 039583807X Publisher: Houghton Mifflin Company Pub. Date: 18 April, 2002 List Price: $30.00 Amazon.com Price: $21.00 |
6.
 |  | Title: A Field Guide to Shells: Atlantic and Gulf Coasts and the West Indies by R. Tucker Abbott, Percy A. Morris, National Audubon Society, National Wildlife Federation, Roger Tory Peterson Institute ISBN: 0395697808 Publisher: Houghton Mifflin Pub. Date: 01 April, 1995 List Price: $26.95 Amazon.com Price: $26.95 |
7.
 |  | Title: Field Guide to Freshwater Fishes: North America, North of Mexico by Lawrence Page, Brooks Burr, Brooks M. Burr, National Audubon Society, National Wildlife Federation, Roger Tory Peterson Institute ISBN: 0395353076 Publisher: Houghton Mifflin Pub. Date: 01 April, 1991 List Price: $24.95 Amazon.com Price: $24.95 |