town (township), Berkshire county, northwestern Massachusetts, U.S. It lies at the foot of Mount Greylock (Greylock, Mount) (3,491 feet 【1,064 metres】), on the Hoosic River, 15 miles (24 km) north of Pittsfield. The town of North Adams is 5 miles north. Founded by Quakers in 1766, it was known as East Hoosuck until 1778, when it was incorporated and renamed for the Revolutionary War hero Samuel Adams. Local limestone and marble quarries supplied early building stone industries, and waterpower from the Hoosic led to the manufacture of textiles and paper. Mount Greylock, the highest point in the state, is crowned by a 90-foot (27-metre) war memorial tower. The mountain and nearby state forests, parks, and ski resorts make Adams a year-round tourist base. In 1784 the town's Quaker meetinghouse was erected. The birthplace (built c. 1810) of the pioneer woman suffragist Susan B. Anthony (Anthony, Susan B.) is also preserved. Area 22 square miles (57 square km). Pop. (1990) 9,445; (2000) 8,809.

county, southern Pennsylvania, U.S., mostly consisting of a piedmont region bordered by Maryland to the south and the Blue Ridge Mountains (Blue Ridge) to the west and north. The principal waterways are Lakes Meade and Heritage and Long Pine Run Reservoir, as well as Conewago, Toms, and Rock creeks. Parklands include parts of Caledonia State Park and Michaux State Forest, as well as Gettysburg National Military Park—which nearly surrounds Gettysburg, the county seat—and the Eisenhower National Historic Site, adjacent to the park.

The county was formed in 1800 and named for John Adams (Adams, John). It is best known as the site of the Battle of Gettysburg (Gettysburg, Battle of) (July 1–3, 1863), commonly regarded as the turning point of the American Civil War in favour of the Union army. Soldiers' Monument in Gettysburg National Cemetery marks the spot where President Abraham Lincoln (Lincoln, Abraham) delivered the Gettysburg Address (Nov. 19, 1863).

Other communities in the county are Littlestown, McSherrystown, New Oxford, and East Berlin. The primary components of the economy are tourism, manufacturing, services (health care and education), and agriculture (apples and poultry). Area 520 square miles (1,347 square km). Pop. (2000) 91,292; (2007 est.) 100,779.