Keywords: Union 1861-3c.jpg en US Postage stamps on cover 1861 issues<br/>The 3-cent Washington 1861 issue was commonly used by Union soldiers during the American Civil War The 3-cent issue is the most frequently found on Civil War era mail <br/>U S Post Office<br/>http //arago si edu/index asp con 1 cmd 1 tid 2027677 Smithsonian National Postal Museum<br/>Photo image obtained/rendered by Gwillhickers U S Post Office 1861 PD-USGov Postal history of the American Civil War Stamps of the United States 1860-1869 |