The Pennsylvania Route.
Old Conestoga wagons.
Effect of Erie Canal.
1827. Pennsylvania state canals and railroads.
The Portage Railroad.
The Baltimore Route.
1828. The Baltimore and Ohio Railroad commenced.
* * * * *
The expansion of the country.—The development of the steamboat, the railroad, and manufactures, and the increased opportunities for doing business.
* * * * *
Lead to demand for labor-saving and time-saving machinery.
Hard-coal grate and stove.
Fire bricks.
Paper made from straw.
Brick-making machine.
Planing machine.
Platform scales.
Reaping machine.
Colt's revolver.
Sewing machine (Hunt).
Steel pens.
Threshing machine.
Telegraph (electric).
Steam printing press.
Matches, etc., etc.