ACKNOWLEDGMENTS 
The group of studies of which this report forms a 
part is the product of several cooperating agencies. 
The Division of Land Economics, Bureau of Agri- 
cultural Economics, United States Department of 
Agriculture, initiated and directed the projects and 
assumed the major portion of the expenditure in- 
volved and most of the work of tabulating the data. 
_The Minnesota Experiment Station bore half of the 
_ expense of that part of the study carried on in Min- 
nesota. Dr. John D. Black, of the Minnesota Experi- 
ment Station, assumed general direction of the field 
work in the three States and actively participated in 
~ much of the work. He also assisted in planning the 
schedules and tabulations and organized the mate- 
rial gathered for localities and companies. Dr. Carl - 
O. Sauer, of the Department of Geography, Uni- 
versity’ of Michigan, directed the field work of the 
settlers’ progress surveys in that State and organized 
the material gathered from the different localities. 
Most of the material on the progress of settlers in 
Michigan is reserved for later publication. The Uni- 
versity of Wisconsin cooperated in some of the 
studies carried on in the Lakes States, but all of this 
material is reserved for later use. 
The following served as field agents in gathering 
data: C. O. Sauer, Budd A. Holt, George C. Haas, 
Archie Black, W. L. Witte, Donald C. MacLachlan, 
R. D. Jennings, J. C. Rundles, C. R. Chambers, E. A. 
Boeger, and Wade DeVries. 
