When Bradford left Philadelphia he was to receive for his share of the mill paper of the value of six pounds, two shillings, and the assurance that he had a monopoly of the entire printing paper that was made in America from September 1, 1697, until September 1, 1707. The quantity is not stated, neither is there anything by which we can determine, at this late day, the capacity of the mill.
All paper was then manufactured by hand, each sheet being made separately. At that early day and long afterward the rags were pounded into pulp in stone and iron mortars by the aid of trip-hammers, and several days were required to furnish a sample sheet of dry-finished paper. At that time a day’s production per man was one and a half reams of newspaper of the size of 20 by 30 inches. Small as was this mill, its importance can hardly be understood, for the greatest commercial metropolis of America drew its supply of printing paper from this mill.
There, in this secluded spot, away from any except the hermits who lived in the caves along the Wissahickon, and with no access to Philadelphia except by Germantown, William Rittenhouse, and his son devoted themselves with untiring industry to their useful and honorable art. They soon acquired a wide reputation as producers of “good paper,” and to this they usually affixed a water-mark.
In 1701 a great misfortune overtook the honest craftsmen. The little stream on which they depended for their water-power experienced a freshet of such fury that the mill was swept away and entirely destroyed, and all machinery, stock, tools and much personal property carried away in the flood.
Nothing daunted they resolved to begin anew. They chose another site a short distance below the first mill and in 1702 a mill, better than the original, was erected.
In the new mill Bradford still retained an interest but Claus Rittenhouse would not renew his monopoly on the mill’s supply. On June 30, 1704, Bradford sold his share in the mill, and from that day the paper mill became a Rittenhouse concern and so continued for generations, until the mill had been rebuilt a fourth time, when it was converted into a cotton factory.
William Rittenhouse died February 18, 1708, and was succeeded in the business by his son, Claus. Both father and son were also Mennonite preachers.
Claus continued to supply not only Bradford in New York, but the home market in Germantown and Philadelphia. Bradford paid partly in fine rags for his paper.
A second paper mill was erected in 1710, in Germantown, by William De Wees, a brother-in-law of Claus Rittenhouse, under whom he learned the trade of papermaking. Claus Rittenhouse obtained possession of this mill in 1713, and it was operated for many years.
When Andrew Bradford established The American Mercury, in Philadelphia, December 22, 1719, the first newspaper ever printed in the British Middle Colonies, the paper for his Mercury was made at the Rittenhouse mill.