In the early days of Middlebury, tons of beautiful gray-veined white marble were quarried from Frog Hollow, creating the hollows through which Mill Street on the opposite bank later ran. Starting in 1802, long before the Marble Works were established on this side of the Creek, Eben Judd and Lebbeus Harris operated Vermont's first large-scale marble business on the south bank. A 10-year-old engineering genius, Isaac Markham, showed Judd a model for cooling marble with water from the Creek as it was cut, saving saw blades and revolutionizing the industry. Until 1837, Judd's factory sawed up to 10,000 square feet of marble a year, most of it quarried in Frog Hollow. Marble tombstones, lintels, sills, mantels, and other products were shipped north to Montréal and as far south as Georgia. In 1829, Judd and his son-in-law Lebbeus Harris built the Judd-Harris House on a hill overlooking their marble operation, with six Ionic pillars fashioned on-site from Middlebury marble. Middlebury Falls remained a center of industrial enterprise into the early twentieth century, and marble can still be seen along the riverbank.