Many people have assisted in the preparation of _The Geologic Story of
Palo Duro Canyon_, and their help is gratefully acknowledged: Professor
Jack T. Hughes, Dr. Frank W. Daugherty, Dr. Robert C. Burton, Meade
Humphries, and Jim Hughes of the West Texas State University Geology
Department provided much information about the area and assisted in the
field; help was also provided by Mr. Pete Cowart, Mr. Earl Burtz, Mr.
Jerry Tschauner, Mr. Bob Watson, Mr. King, and other park personnel; Mr.
C. Boone McClure, of the Panhandle-Plains Historical Museum, furnished
some of the photographs; Mr. J. Dan Scurlock, Mr. Bill Collins, and Mr.
Harold Allums, of the Texas Parks and Wildlife Department, made
available certain maps and statistical data; Mrs. Ples Harper of Canyon
assisted in assembling information and photographs for the Pioneer
Amphitheatre; and the aerial photograph of Palo Duro Canyon was taken by
Mr. W. A. Hester and made available through the courtesy of Mr. Charles
A. Wolflin of Amarillo.
Drs. Peter T. Flawn, Peter U. Rodda, and Ross A. Maxwell of the Bureau
of Economic Geology read much of the manuscript and offered many helpful
suggestions, and Mr. A. Richard Smith provided special information on
caves in the Palo Duro area. Special thanks are due to Miss Josephine
Casey who edited the manuscript and to Mr. J. W. Macon, cartographer,
who assumed responsibility for preparing the maps. Thanks are due also
to my wife, Jennie, who critically read the manuscript and took a number
of the photographs. Finally, I would like to thank Dr. J. Daniel Powell
of The University of Texas at Arlington for invaluable assistance in the
field and his enthusiastic co-operation throughout the project.