Lowell National Historical Park interprets the history of the American Industrial Revolution. The concept of the nation's first planned industrial city was inspired by the creative thinking of the Boston Associates and the need for domestically made cloth. The canals were dug by hand. The textile mills were powered by the Pawtucket Falls and labor of New England farm women and later immigrants. Commemorate Lowell National Historical Park with this collectible pin! Magnet and Patch measure 3-1/2 H x 2-3/4 W. Pin measures 1-1/8 H x 7/8 W.