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Coralville: Story of a Book
2020 Project
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Subject is exactly "Machinery"
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John Halvorsen & his ditching machine, 1920s-1940s
John H. Halvorsen walks beside his ditching machine. He used this machine to put in water and sewer lines both in Manville and University Heights in Iowa City; pieces of pipe can be seen on the ground near him.
John H. Halvorsen was born in…
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