Dozens of first person accounts of Lowell from its early days until 1913

Whittier with plenty of sketches from "The Stranger in Lowell"

Early 1920s Lowell history

A follower of Etzler for a period. Also, quite possibly a crazy person.

Great little essay on Thoreau, Etzler, and Lowell. Not unlike what I have planned for my first chapter.

By Richard A. Hale… Kind of a pioneering work on the commodification of water for industrial power, though Hale isn't self-consciously doing that.

Reflections on water wheels with reference to James Francis, head of the Lowell Proprietors.

the environmental, economic, and technological aspects of alternative power sources by Roger H. Charlier and John R. Justus. There's a small mention of inventor Alva L. Reynolds.

Alva Reynolds was an early wind power inventor. When his motor failed, he turned to keeping wharf piles free.

A book first published in the early 20th century that relates basic principles and engineering of various agricultural power sources, including windmills.

Sweet paper from the Mellon Institute of Industrial Research at the University of Pittsburgh on the impacts of "The Smoke Nuisance" on architecture, plants, and people.