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Description:
Alvar Peterson maize field harvest for productivity. Lorentz C. Pearson pictured.
Creator:
Lawrence, Donald, 1911-1996
Contributed By:
University of Minnesota Libraries, University Archives.
Last Updated:
2018-07-23
Creator:
Lawrence, Donald, 1911-1996
Created:
1975-07-08
Contributed By:
University of Minnesota Libraries, University Archives.
Last Updated:
2018-07-23
Description:
Ann Archer measuring light
Creator:
Lawrence, Donald, 1911-1996
Created:
1960-07 - 1960-08
Contributed By:
University of Minnesota Libraries, University Archives.
Last Updated:
2018-07-23
Description:
Cedar Creek Natural History Area at Lawrence cabin. Pictured left to right: Elizabeth G. Lawrence, Cora Corniea, Grace Lee Nute, Helen Lowry Allison.
Creator:
Lawrence, Donald, 1911-1996
Created:
1957-04-21
Contributed By:
University of Minnesota Libraries, University Archives.
Last Updated:
2018-07-23
Description:
CCNHA "Corny" (Coneriea) Number 1. Conifer Hardwood forest
Creator:
Lawrence, Donald, 1911-1996
Created:
1960-08-20
Contributed By:
University of Minnesota Libraries, University Archives.
Last Updated:
2018-07-23
Description:
Mosquito protection
Creator:
Lawrence, Donald, 1911-1996
Created:
1960-08-20
Contributed By:
University of Minnesota Libraries, University Archives.
Last Updated:
2018-07-23
Description:
West side of octagonal mound.
Creator:
Lawrence, Donald, 1911-1996
Created:
1961-09-17
Contributed By:
University of Minnesota Libraries, University Archives.
Last Updated:
2018-07-23
Description:
CCNHA "Billy Goat" Quercus Forest.
Creator:
Lawrence, Donald, 1911-1996
Created:
1960-08-31
Contributed By:
University of Minnesota Libraries, University Archives.
Last Updated:
2018-07-23
Creator:
Lawrence, Donald, 1911-1996
Created:
1975-07-09
Contributed By:
University of Minnesota Libraries, University Archives.
Last Updated:
2018-07-23
Description:
Construction of octagonal mound
Creator:
Lawrence, Donald, 1911-1996
Created:
1961-08-07
Contributed By:
University of Minnesota Libraries, University Archives.
Last Updated:
2018-07-23
Description:
Cedar Creek Natural History Area. Anoka County, Minnesota. Hill's Oak frosting experiment. McAndrews and Ahlrichs watching the temperature fall.
Creator:
Lawrence, Donald, 1911-1996
Created:
1960-05-25
Contributed By:
University of Minnesota Libraries, University Archives.
Last Updated:
2018-07-23
Description:
Thermistor probe in black bark of young Paper Birch sprout on Corniea field.
Creator:
Lawrence, Donald, 1911-1996
Created:
1962-05-17
Contributed By:
University of Minnesota Libraries, University Archives.
Last Updated:
2018-07-23
Creator:
Lawrence, Donald, 1911-1996
Created:
1961-07
Contributed By:
University of Minnesota Libraries, University Archives.
Last Updated:
2018-07-23
Description:
Nearly vertical view on Cedar Creek. View northeast showing where ditch from east enters Cedar Creek just north of culvert under highway 24.
Creator:
Lawrence, Donald, 1911-1996
Created:
1967-04-04
Contributed By:
University of Minnesota Libraries, University Archives.
Last Updated:
2018-07-23
Description:
Light Measurement by holding paddle through door opening. Door removed
Creator:
Lawrence, Donald, 1911-1996
Created:
1960-08-04
Contributed By:
University of Minnesota Libraries, University Archives.
Last Updated:
2018-07-23
Creator:
Lawrence, Donald, 1911-1996
Created:
1975-07-09
Contributed By:
University of Minnesota Libraries, University Archives.
Last Updated:
2018-07-23
Description:
Paper bird evapotranspirimeter manually operated. Tree inside tank leafless. Trees outside not completely leafless. Higher water table inside tank may be responsible.
Creator:
Lawrence, Donald, 1911-1996
Created:
1960-09-06
Contributed By:
University of Minnesota Libraries, University Archives.
Last Updated:
2018-07-23
Description:
Installing access tunnel beneath mound.
Creator:
Lawrence, Donald, 1911-1996
Created:
1961-07
Contributed By:
University of Minnesota Libraries, University Archives.
Last Updated:
2018-07-23
Creator:
Lawrence, Donald, 1911-1996
Created:
1975-07-09
Contributed By:
University of Minnesota Libraries, University Archives.
Last Updated:
2018-07-23
Description:
Sampling a tree trunk in productivity studies. Archer
Creator:
Lawrence, Donald, 1911-1996
Created:
1960-08-20
Contributed By:
University of Minnesota Libraries, University Archives.
Last Updated:
2018-07-23
