This booklet could not have been prepared without the cooperation and
assistance of many individuals and organizations. We are indebted to the
National Park Service for the use of facilities, equipment, and
photographs, and for the enthusiasm and interest of all of the park
staff. We especially appreciate the cooperation, advice, and assistance
rendered by the late Fred C. Fagergren, former superintendent of Grand
Teton National Park; Willard E. Dilley, former chief park naturalist;
and R. Alan Mebane, former assistant chief park naturalist.
Profs. Charles C. Bradley and John Montagne of Montana State University
and Bruno J. Giletti of Brown University generously provided us with
unpublished data. Cooperators during the years of background research
were the late Dr. H. D. Thomas, State Geologist of Wyoming, and Dr. D.
L. Blackstone, Jr., Chairman, Department of Geology, University of
Wyoming.
Helpful suggestions were made by many of our colleagues with the U. S.
Geological Survey; S. S. Oriel, in particular, gave unstintingly of his
time and talents in the review and revision of an early version of the
manuscript. A later version had the further benefit of critical review
by three other people, all experienced in presenting various types of
scientific data to public groups: John M. Good, former chief park
naturalist of Yellowstone National Park; Bryan Harry, former assistant
chief park naturalist of Grand Teton National Park; and Richard Klinck,
“1965 National Teacher of the Year.”
We are indebted to Ann C. Christiansen, Geologic Map Editor, for advice
and guidance on the illustrations and to R. C. Fuhrmann and his staff
for preparation of many of the line drawings. Block diagrams and photo
artwork were prepared by J. R. Stacy and R. A. Reilly. All photographs
without specific credit lines are by the authors. From the beginning of
the Teton field study to editing and proofing of the final manuscript,
our wives, Jane M. Love and Linda H. Reed, have been enthusiastic and
indispensable participants.