SIXTY-EIGHTH ANNUAL REPORT 21 



areas in Montana and North Dakota and Cretaceous deposits in South 

 Dakota. Work in the Lewis and Clark and Broadwater Counties in 

 Montana where the Tertiary stratigraphy has been imperfectly known 

 since its discovery in 1904 by the late Dr. Earl Douglass definitely 

 established the presence of Lower and Middle Oligocene and Lower 

 and Middle Miocene in that area. In North Dakota the investigations 

 demonstrated that the Cannonbail Marine member of the Fort Union 

 formation has a much greater areal distribution than was formerly 

 supposed. Other activities consisted of rapid surveys of proposed 

 reservoir projects in Nebraska and Colorado. Investigations in Mon- 

 tana were resumed in June of 1951. 



Laboratory activities at the field headquarters in Lincoln during 

 the year included the processing and cataloging of specimens; the 

 processing of records, including the indexing and filing of photo- 

 graphs; and the preparation and mimeographing of preliminary re- 

 ports for distribution to the cooperating agencies. The specimens 

 processed, numbering 84,255, came from 371 sites distributed over 18 

 reservoirs and other projects. In all, 11,764 reflex copies of records 

 were made. Color transparencies totaling 651 were cataloged. Black- 

 and-white photographic negatives numbering 1,707 were made, and 

 7,507 contact prints were processed. In addition, 197 8-by-lO" en- 

 largements were made. The drawings, tracings, and maps prepared 

 for use in the various reports numbered 469. 



Several exhibits were prepared interpreting the salvage program 

 and the prehistory of the Missouri Basin area. One of them was dis- 

 played at the Eighth Conference for Plains Archeology, while another 

 was placed in the windows of the Surveys' quarters in downtown 

 Lincoln. A series of lantern slides illustrating the salvage program, 

 particularly with respect to Nebraska, for use in an automatic pro- 

 jector, was prepared in cooperation with the University of Nebraska 

 State Museum and was installed in the latter institution. 



G. Ellis Burcaw, archeologist, was in charge of a field party exca- 

 vating at the Eock Village in the Garrison Eeservoir, N. Dak., at 

 the start of the fiscal year. He continued his activities there until late 

 in October and returned to the field headquarters at Lincoln on Novem- 

 ber 3 where he worked on his field report covering the summer's 

 activities. 



Paul L. Cooper, field director, devoted most of his time to manage- 

 ment problems and general supervision of the field office and labora- 

 tory. He made numerous trips to inspect and consult with field parties 

 and served in an advisory capacity to the Kegion Two office of the 

 National Park Service at Omaha, Nebr., in the matter of preparing 

 agreements for cooperative projects carried on by State and local 

 institutions in the Missouri Basin. 



