Lake Erie / Ohio River / Lawrence River / Lake Erie R. R. / Beaver River / /
Organization
Engineers’ Club of Philadelphia / Canadian government / Pennsylvania Historical and Museum Commission / U.S. War Department / Engineering Society of Western Pennsylvania / Engineers of Dreams / /
Person
Theodore Cooper / M. W. von Bernewitz / Joseph White / Eric N. DeLony / Richard Cook / Harold H. McLean / Frank W. Skinner / Keith L. Bryant / Jr. / Henry Petroski / David Plowden / Jet Lowe / Justin M. Spivey / Alfred A. Knopf / Thomas T. Taber III / Preston M. Thayer / Sellersville / Ronald A. Baraff / Francis H. Saylor / Michael Bezilla / Joseph H. Cofrode / Fredericksburg / Albert Lucius / Paul L. Wolfel / A. R. Raymer / Joseph E. B. Elliott / /