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Dredge "William A. Thompson" under construction, Pittsburgh, Pennsylvania
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Dredge "William A. Thompson" under construction, Pittsburgh, Pennsylvania
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Dredge "William A. Thompson" under construction, Pittsburgh, Pennsylvania
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Dredge "William A. Thompson" under construction, Pittsburgh, Pennsylvania
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Dredge "William A. Thompson" under construction, Pittsburgh, Pennsylvania
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Dredge "William A. Thompson" under construction, Pittsburgh, Pennsylvania
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Dredge "William A. Thompson" under construction, Pittsburgh, Pennsylvania
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Dredge "William A. Thompson" under construction, Pittsburgh, Pennsylvania
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Black-and-white photographs
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Current results range from
1936
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1937
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City of Pittsburgh
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Subject Headings
Dredges
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Mississippi River
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River Channels
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Rivers
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Contributor
U.S. Army Corps of Engineers
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