10th Regiment, Pennsylvania Reserve Infantry (39th Volunteers)
This regiment was organized at Camp Wilkins, near Pittsburg, June and July, 1861. It first mustered out June 11, 1864. It mustered out a second time at Richmond August 13. 1865. 
Companies in this Regiment with the Counties of Origin
Men often enlisted in a company recruited in the counties where they lived though not always. After many battles, companies might be combined because so many men were killed or wounded. However if you are unsure which company your ancestor was in, try the company recruited in his county first.
Field and Staff Officers - See Roster
Company A - Men recruited at Somerset, Somerset County - See Roster
Company B - Men recruited at West Middlesex, Mercer County - See Roster
Company C - Men recruited at Franklin, Venango County - SeeRoster
Company D - Men recruited at Canonsburg, Washington County - See Roster
Company E - Men recruited in Clarion County - See Roster
Company F - Men recruited at Rochester, Beaver County - See Roster
Company G - Men recruited at Mercer, Mercer County - See Roster
Company H - Men recruited at Warren, Warren County - See Roster
Company I - Men recruited at Meadville, Crawford County - See Roster
Company K - Men recruited in Beaver County - SeeRoster
- Beginning United States Civil War Research gives steps for finding information about a Civil War soldier. It covers the major records that should be used. Additional records are described in ‘Pennsylvania in the Civil War’ and ‘United States Civil War, 1861 to 1865’ (see below).
- National Park Service, The Civil War Soldiers and Sailors System, is searchable by soldier's name and state. It contains basic facts about soldiers on both sides of the Civil War, a list of regiments, descriptions of significant battles, sources of the information, and suggestions for where to find additional information.
- Pennsylvania in the Civil War describes many sources, specifically for Pennsylvania, and how to find them. These include compiled service records, pension records, rosters, cemetery records, Internet databases, published books, etc.
- United States Civil War, 1861 to 1865 describes and explains United States and Confederate States records, rather than state records, and how to find them. These include veterans’ censuses, compiled service records, pension records, rosters, cemetery records, Internet databases, published books, etc.
- National Park Service, The Civil War Soldiers and Sailors System, (accessed 6 December 2010).