This article documents the history of Rochester, New York, in western New York State. Settlement began in the late 18th century, and the city flourished with the opening of the Erie Canal. It became a major manufacturing center, and attracted many Italians, Germans, Irish and other immigrants, as well as a dominant group of Yankees of New England origin. The Yankees made Rochester the center of multiple reform movements, such as abolitionism and women's rights. It was famous as the center of the American photography industry, with headquarters of Eastman Kodak. In the 1970s it became fashionable to call the industrial cities along the Great Lakes 'rustbelt cities' following the move away from steel, chemical and other hard goods manufacturing. Rochester, with the presence of Ritter-Pfaulder, Bausch and Lomb, Eastman Kodak, Xerox, Gannett and other major industries, defied the trend for many decades following WWII. Of the 19 places in the United States named Rochester, at least 8 were named directly after Rochester, New York, having been founded or settled by former residents. These include: Rochester, Indiana; Rochester, Texas; Rochester, Iowa; Rochester, Kentucky; Rochester, Michigan; Rochester, Minnesota; Rochester, Nevada; and Rochester, Ohio. Early settlement Following the American Revolution, western New York was opened up for development as soon as New York and Massachusetts compromised and settled their competing claims for the area in December 1786 by the Treaty of Hartford. The compromise was that, while New York would have political sovereignty over the land, Massachusetts would have pre-emptive rights to obtain title from the Native Americans and own (and profit from selling) the land. Phelps and Gorham purchase On April 1, 1788, after extensive machinations by various speculators, Massachusetts' pre-emptive right over all western New York Lands — comprising some 6,000,000 acres (24,000 km2) — was sold to Oliver Phelps and Nathaniel Gorham, both of Massachusetts. The sales price was $1,000,000, payable in three equal annual installments of certain Massachusetts securities then worth about 20 cents on the dollar. The right sold applied to all land west of a line running from the mouth of Sodus Bay on Lake Ontario, due south through Seneca Lake, to the 82nd milestone on the Pennsylvania border near Big Flats (the "Pre-emption Line"), and all the way to the Niagara River and Lake Erie (the "Phelps and Gorham Purchase"). In order to obtain title to such land, Phelps and Gorham would have to extinguish