1. Pennsylvania;Boston to Buffalo, in the Footsteps of Amos Eaton and Edward Hitchcock: Boston, Massachusetts to Washington, D.C. June 28–July 8, 1989;1989
2. Erie Canal history and geology;Boston to Buffalo, in the Footsteps of Amos Eaton and Edward Hitchcock: Boston, Massachusetts to Washington, D.C. June 28–July 8, 1989;1989
3. Amos Eaton and early New York State geology;Boston to Buffalo, in the Footsteps of Amos Eaton and Edward Hitchcock: Boston, Massachusetts to Washington, D.C. June 28–July 8, 1989;1989
4. New York State Troy, New York and the Van Rensselaers;Boston to Buffalo, in the Footsteps of Amos Eaton and Edward Hitchcock: Boston, Massachusetts to Washington, D.C. June 28–July 8, 1989;1989
5. Geology and the Saratoga Campaign of 1777;Boston to Buffalo, in the Footsteps of Amos Eaton and Edward Hitchcock: Boston, Massachusetts to Washington, D.C. June 28–July 8, 1989;1989