Date: | 1933 |
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Description: | Three men working near a tree. During 1933 Menominee Indians protected over 4000 acres of white pines from the blister rust threat. |
Date: | |
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Description: | Six-man crew at Camp Mercer looking for ribes (gooseberries), a stage essential for the transmission of blister rust to white pines, working in a marsh are... |
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