Union County Carnegie Library
300 East South Street
Union, SC 29379
Phone: (864) 427-7140
Hours: M,Tu, Th 9-7, W, Sa 12-5:30, F 9-5:30
Closed Sunday
(entrance on S. Mountain Street)  
 

Spartanburg County Library
Headquarters Library
151 South Church Street
Spartanburg, SC 29306
Phone: (864) 596-3500
Has good genealogy section (Kennedy Room, 2nd floor) that includes some Union Co. records.  
 

South Carolina Library
University of South Carolina
Columbia, SC
(803) 777-3131  

South Carolina Historical Society
100 Meeting Street
Charleston, SC 29401
(803) 723-3225