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Illinois Prairie Path, first trip: May T. Watts and othersOctober 19 1963
Sobolik, A. A.
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Illinois Prairie Path, first trip: Erica Watts, Warren Keck, May T. Watts, and Helen TurnerOctober 19 1963
Sobolik, A. A.
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Illinois Prairie Path, first trip: Floyd Swink, Helen Turner, May T. Watts, and others near WheatonOctober 19 1963
Sobolik, A. A.
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Illinois Prairie Path, first trip: Hemp mill near WayneOctober 19 1963
Sobolik, A. A.
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Illinois Prairie Path, first trip: Hikers walking on railroad tiesOctober 19 1963
Sobolik, A. A.
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Illinois Prairie Path, first trip: Helen Turner, Jane Moore, May T. Watts, and others observing plants along railroad tiesOctober 19 1963
Sobolik, A. A.
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Illinois Prairie Path, first trip: Helen Turner speaking to fellow hikers at a quarryOctober 19 1963
Sobolik, A. A.
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Illinois Prairie Path, first trip: May T. Watts speaking to fellow hikersOctober 19 1963
Sobolik, A. A.
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Illinois Prairie Path, second trip: May T. Watts with group at High Lake stationMay 9 1964
Sobolik, A. A.
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Illinois Prairie Path, first trip: Hikers using binocularsOctober 19 1963
Sobolik, A. A.
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Illinois Prairie Path, second trip: May T. Watts giving a presentation at High Lake stationMay 9 1964
Sobolik, A. A.
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Illinois Prairie Path, first trip: barn, pasture, and horses near GenevaOctober 19 1963
Sobolik, A. A.
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Illinois Prairie Path, first trip: hikers with backpacksOctober 19 1963
Sobolik, A. A.
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Illinois Prairie Path, first trip: hikers walking on railroad tiesOctober 19 1963
Sobolik, A. A.
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Illinois Prairie Path, first trip: dry cattails and marsh marigoldsOctober 19 1963
Sobolik, A. A.
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Illinois Prairie Path, first trip: old railroad ties near a homeOctober 19 1963
Sobolik, A. A.
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Illinois Prairie Path, first trip: hikers stopped along gravel pathOctober 19 1963
Sobolik, A. A.
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Illinois Prairie Path, second trip: hikers on a gravel pathMay 9 1964
Sobolik, A. A.