SEVENTY-FIFTH ANNUAL REPORT 19 



the season prevented the party from doing extensive site mapping or 

 reconnaissance in the area, but several of the larger sites were visited 

 and surface collections were made. A site map and exploratory tests 

 were made at 39AE8, which appears to be related to the Huff site 

 in North Dakota. Six other large sites were located and recorded 

 for the first time in this area. The party disbanded on September 

 16, after 2 weeks in the Oahe Keservoir area. 



The 1958 field season in the Missouri Basin began in the Big Bend 

 Keservoir area on May 11 with a small party exploring in the vicinity 

 of the Medicine Crow site (39BF2) . William N. Irving with a crew 

 of three and Mrs. Kathryn H. Clisby, pollen specialist from Oberlin 

 College, Ohio, collected samples of fossil pollen from various local- 

 ities in the area. Upon Mrs. Clisby's departure, Irving and his crew 

 prepared a detailed map of the Medicine Crow site. On June 10 

 he increased his party to eight crewmen and added an assistant 

 trained in geology to work with him on stratigraphic terrace sequences 

 relating to the geology of the site and its immediate vicinity. They 

 located one new site containing a large mammalian fossil in a terrace 

 fill deposit and another site with columnar fire hearths exposed in 

 a cut bank of the river. Intensive excavations continued in area B 

 at the Medicine Crow site, and by the end of the year were progress- 

 ing through the upper 3 feet of the preceramic zones. 



On May 19, the second River Basin Surveys field party began op- 

 erations in the Big Bend Reservoir area. This was a party of 10 

 under the direction of Robert W. ISTeuman excavating at two sites 

 near Old Fort Thompson on the left bank of the Missouri River. 

 Part of this crew continued work begun last season in the Akichita 

 site (39BF221) in an attempt to learn details of architectural fea- 

 tures. Extensive trenching had failed to find any traces of a house 

 structure by the end of the year, although much midden refuse added 

 significantly to the specimen inventory. The second section of the 

 crew continued work begun last season at the Truman Mound site 

 (39BF224). In that mound group. Mounds 5 and 6 were excavated 

 during June, thus completing work at the site. In both mounds sec- 

 ondary burials accompanied by shell, disk, and bone beads were found. 

 Beneath Mound 6, several projectile points, bone beads, and other 

 artifacts were found. This party planned to concentrate the re- 

 mainder of the field season on the several other mound sites in the 

 immediate vicinity. 



The third River Basin Surveys party in the Big Bend Reservoir 

 area in June consisted of a crew of seven led by James J. F. Deetz. 

 It began work on June 10 and spent the remainder of the month in 

 excavations in areas A and C of the Medicine Crow site (39BF2). 

 Midden areas were trenched, and one circular earth lodge was exca- 

 vated. This lodge was actually two closely superimposed structures. 



