Arthur Horace James (1883-1973). Prominent Pennsylvania Republican politician and public official. Elected Luzerne County District Attorney, 1919-1926; Lieutenant Governor, 1927-1931; and Governor, 1939-1943. Served as a Judge on the Superior Court of the Commonwealth, 1933-1938, and was a Republican presidential primary candidate in 1940. James was born in Plymouth of Welsh immigrant parents and worked as a "breaker boy" in anthracite coal mines.

150 E Main St. (Washington & Main), Plymouth, PA, United States

Sephaniah Reese. Automobile pioneer, best known for building a 3-wheel, 1-cylinder vehicle here, 1887-88, and operating it on Plymouth's streets. His machine shop, incorporated 1888, was an early bicycle maker; the firm was located here for over 80 years.

230 W. Main St., Plymouth, PA, United States

Abijah Smith & Company. Established 1807 by Abijah Smith, who had bought 75 acres here on Ransom Creek and was later joined by his brother John. Their shipments of coal by ark down the Susquehanna, begun in 1807, continued for 20 years. This company was, in 1818, the first to extract Pennsylvania coal by powder blasting. In the same family almost 70 years, it was considered the first commercially successful U.S. anthracite firm.

US 11 (Main St.) at Natl. Guard Armory, Plymouth, PA, United States