* Angle Valley Press
* Arthur H. Clark Co.
--- B ---
* Blue & Gray Education Society
* Blue and Gray Magazine
* Broadfoot
* The Butler Center for Arkansas Studies
* Butternut and Blue
--- C ---
* Camp Pope Publishing
* Cass Country Historical Society
* Casemate
* Caxton Press
* Center for the Study of the Civil War in the West (WKU)
* Combat Studies Institute (CSI) Press
--- D ---
* Dram Tree Books
--- E ---
* Eakin Press
* Edinborough Press
--- G ---
* Gauley River Book Company
--- H ---
* Heritage Books
* Higginson Book Company (Wardhouse Books)
* The History Press
--- I ---
* Ironclad Publishing
--- J ---
* John F. Blair, Publisher
--- K ---
* Kansas State Historical Society
--- L ---
* Lincoln Studies Center
--- M ---
* McClain Printing Company
* McFarland & Co.
* McWhiney Foundation Press
* Mechling Bookbindery
* Minnesota Historical Society Press
--- N ---
* Naval Institute Press
* NPS Park Histories (free download)
* North Carolina Office of Archives and History
* Northern Illinois University Press
--- O ---
* Oklahoma Historical Society
* Osprey Publishing
* The Overmountain Press
--- P ---
* Parkway Publishers
* Pelican Publishing Company
* Pensacola Historical Society
* Pictorial Histories Publishing
* Potomac Books
--- R ---
* Rowman & Littlefield (American Crisis Series)
--- S ---
* Sandlapper Publishing
* Savas Beatie
* Schroeder Publications
* South Carolina Dept. of Archives and History
* Stackpole Books
* State House Press
--- T ---
* Texas State Historical Society
* Twin Commonwealth Publishers
* Two Trails Publishing
--- W ---
* Washington County Historical Society
* Westholme Publishing
* West Virginia Book Company / Quarrier
* White County Historical Society
* White Mane / Burd Street Press
NOTE:
- This is a select list, and not in any way meant to be a comprehensive compilation.
