flat glass was slow in the New World as well as in the Old,
until the modern era of industry arrived. Probably the first
attempt to manufacture window glass in the United States was
in Allowaystown, New Jersey, in 1738.
This venture was
unsuccessful as was a later attempt by Robert Hewes,
who, in 1790, started a small window glass factory in a forest
near Concord, new Hampshire. A few years later, in 1797,
Gallatin and Company started a
window glass factory in New
Geneva, Pennsylvania, ninety miles south of Pittsburgh.
This factory proved fairly profitable, the glass at that time
selling for $7.00 per box of fifty feet, 10 inches by 10
inches in size.