Brackettville, Texas. Contains material on the cave
geology, biology, and vertebrate paleontology of the area; road logs for the
geology, biology, and scenic field trips; and descriptions of about 150 caves
in Texas and northern Mexico. Includes six folded maps in back pocket.
Edited by William Elliott and George Veni 1994 ISBN 1-879961-04-0 viii+342 pages, softbound
may only be sold to NSS members, due to sensitive cave location