Baldwin–Felts Detective Agency

The Baldwin–Felts Detective Agency was a private detective agency in the United States from the early 1890s to 1937. The agency's members played a key role in the events that led to the Battle of Blair Mountain in 1921 and violent repression of labor union members. Significant incidents, later collectively known as the Coal Wars, occurred in various locations. The Pocahontas Coalfield region of West Virginia witnessed some of these events. Among these incidents are the Paint Creek–Cabin Creek strike of 1912 in West Virginia, 1913–1914 Colorado Coalfield War (which notably included the Ludlow Massacre in 1914), and the Battle of Matewan in 1920.

The agency was founded in the early 1890s by William Gibbony Baldwin as the Baldwin Detective Agency.