LIBROS DEL AUTOR: harlan d unrau

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  • Historic Resource Study
    Harlan D. Unrau / National Park Service / U. S. Department of the Interior
    On January 8, 1971, President Richard M. Nixon signed into law the bill creating the Chesapeake & Ohio Canal National Historical Park. In the mid-1970s, National Park Service historian Harlan D. Unrau produced a major, handwritten, multi-volume study of the history, engineering, operation, maintenance, and other aspects of the Chesapeake & Ohio canal. A rough, unedited typed ve...
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