
Source: Color Landform Atlas of the United States, Virginia - County Map (by Ray Sterner)
Pulaski County was created in 1839 from land that was previously part of Wythe and Montgomery counties.1
The name honored Casimir Pulaski, who is credited with organizing and training the cavalry arm of the Continental Army during the American Revolution.2

Pulaski County in 1856, as the Virginia and Tennessee brought the first railroad to Southwest Virginia
Source: Library of Congress, Map & profile of the Virginia & Tennessee Rail Road (William Willis Blackford, 1856)

in 2015, the Hoover Color Corp donated its Pulaski County iron oxide mine (which was once the source of pigment for paints and Crayola crayons) for an extension of the New River Trail State Park bike trails
Map Source: ESRI, ArcGIS Online