(1821). Comparative calculations, and remarks on internal improvements by roads, canals, and river navigation: Illustrative of the advantages to be derived from the improvement of the river Lehigh. Philadelphia: Printed by W. Brown.

Comparative Calculations, and Remarks On Internal Improvements By Roads, Canals, and River Navigation: Illustrative of the Advantages to Be Derived From the Improvement of the River Lehigh. Philadelphia: Printed by W. Brown, 1821.

Comparative Calculations, and Remarks On Internal Improvements By Roads, Canals, and River Navigation: Illustrative of the Advantages to Be Derived From the Improvement of the River Lehigh. Philadelphia: Printed by W. Brown, 1821.