Lowell-based park rangers and other local NPS staff essentially run the show that weekend. That show draws upwards of 100,000 people to the city. This year, there will be fewer park rangers ...

LOWELL — The Department of Government ... A 3,900-square-foot unit leased by the National Park Service at 325 Chelmsford St. and a 36,752-square-foot unit leased by the Internal Revenue Service ...

The Boston merchants who founded Lowell in 1821 named it after Francis Cabot Lowell, a local figure in the Industrial Revolution, according to the National Park Service (NPS).