Xxiv LEITER OF TRANSMISSION. 



through the important aid and hospitahty rendered me by the following 

 gentlemen : 



In 1872, at Fort Bridger, Wyo., I was assisted by Capt. K. 0. Clift, in 

 command of the post, and by Lieutenant Rogers, quartermaster, and Dr. 

 Joseph Corson, surgeon ; also by Judge W. Carter and Dr. J. V. Carter. 

 In Montana, in 1S7G, I received important aid from General E. 0. C. Ord, 

 commanding the Department of the Missouri, and Major Ilges, in command 

 at Fort Benton; and in my explorations in Washington Temtorj-, in 1879, 

 I was under obligations to Dr. George H. Sternberg, U. S. A.* In 1880-81 

 the military authorities at Fort "Washakie, Wyo., rendered me much assist- 

 ance, particularly Col. J. W. Mason, commanding, and Dr. W. H. Corbu- 

 Bier, post surgeon.* 



I have received important aid from Professor Baird, of the Smithsonian 

 Institution, and from Professor Condon, of Eugene City, Oreg. I wish 

 here to place on record the names of my assistants, who have contributed 

 greatly to the success of my expeditions, viz : William G. Shedd, Charles 

 H. Sternberg, Jacob Boll, J. C. Isaac, Russell S. Hill, Frank Hazard, Jacob 

 L. Wortman, and D. Baldwin. 



T have been also favored by special rates by the general officers of the 

 Union and Central Pacific, and Pennsylvania Railroad companies. I wish 

 here to express my thanks to Messrs. Kimball and Stebbins of the Union, 

 and Governor Stanford of the Central Pacifies, and to Presidents Scott and 

 Roberts of the Pennsylvania Railroad. 



The lithographic work of Messrs. T. Sinclair & Son maintains the 

 well-known reputation of their house, and will prove satisfactory to students 

 generally. 



I am, witli respect, 



E. D. COPE, 

 Paleontologid, United States Geological Survey of the Territories. 



Dr. F. V. Hayden, 



Director of the United Stales Geological 



and Geographical Survey of the Territories. 



•In my explorations of foriiifttioim otlirr tliiin those treatwl of in tbi« volume, I have been assiated 

 oy other gentlemen, gouoriiUy ollicers of the Army, to whom I will refer in the ft])]>n>i)riate place. 



