Secretary's Report, 1955 



PLATE 2 





1. Operations of River Basin Surveys. Tracing floor of earth lodge at village site near 

 Chamberlain, S. Dak, Missouri River in background. Area has since been destroyed. 



2. Operations of River Basin Surveys. Mechanical equipment was used successfully in 

 removing upper part of fill from house pits and for excavating long trenches. 



