• Paulson Brothers Ordnance Corporation
  http://www.pbocorp.biz
• Historical Ordnance Works
  http://www.historicalordnanceworks.com/
• Hansen Wheel and Wagon Shop
  http://www.hansenwheel.com/
• Shiloh Civil War Relics
  http://www.shilohrelics.com/
• Civil War News
  http://www.civilwarnews.com/
• The Artilleryman
  http://www.artillerymanmagazine.com/
• The Regimental Quartermaster
  http://www.regtqm.com/
• Ulysses S. Grant Presidential Library
  http://www.usgrantlibrary.org/