Caves & Caverns an activity book
by Kate Coder, Audrey Taylor, and Ann Molosky
Lincoln Caverns, Inc. ©1990
pages 2-5, 29
Caves
by Stephen Kramer
Carolrhoda books, Inc. ©95
pages 8-28
Our Planet Caves
by Susan Rigby
Troll Associates ©94
pages 4-17
Looking Inside Caves & Caverns X-Ray Vision series
By Ron Schultz
John Muir Publications, ©93
pages 4-10, 20-3
Caves The Wonders of our World series
By Neil Morris
Crabtree Publishing Co. ©96
pages 4-15
Speleology - Caves and the Cave Environment
by George W Moore and Nicholas Sullivan
Cave Books, 64,78,97
pages 7-78
Caving
By Steven Boga
Stackpole Books 97
pages 1-157 (spelunking), 158-174 (conservation)
Adventure of Caving A Beginner's Guide For Exploring Caves Softly and Safely
By David McClurg
D&J Press 86
pages 30-218 (spelunking), 18-28 (conservation)
Caving Basics A Comprehensive Guide for Beginning Cavers, Third Edition
G Thomas Rea
National Speleological Society 82, 87, 92
pages all (spelunking)