This chapter contains sections titled:

    Introduction

    Stop 45. Bradford, Pennsylvania

    Stop 46. Allegheny Front, Us 322 East Of Phillipsburg, Pennsylvania

    Stop 47. Horseshoe Curve, Altoona, Pennsylvania

    Stop 48. Allegheny Portage Railroad National Historic Site, Cresson, Pennsylvania

    Stop 49. Johnstown Flood National Memorial, Saint Michael, Pennsylvania

    Stop So. Yellow Creek Stratigraphic Section, Belween Loysburg And Hopewell, Pennsylvania

    Stop 51. Canal Museum, Chesapeake And Ohio Canal National Historic Park, Hancock, Maryland

    Acknowledgments


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