Stone crushing plant on the Iowa State Normal School campus.
Additional photographs and objects can be found at the University of Northern Iowa Museum/ Center for the History of Rural Iowa Education & Culture UNI Museum @ Rod Library (https://museum.library.uni.edu/) & The Rural School Collections at UNI | University of Northern Iowa (https://ruralschools.uni.edu/)
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Stone crushing plant on the Iowa State Normal School campus.
Additional photographs and objects can be found at the University of Northern Iowa Museum/ Center for the History of Rural Iowa Education & Culture UNI Museum @ Rod Library (https://museum.library.uni.edu/) & The Rural School Collections at UNI | University of Northern Iowa (https://ruralschools.uni.edu/)