1st Regiment, Pennsylvania Cavalry (15th Reserves)
Companies "A," "B," "C," "D," "E," "F" and "G" were organized at Camp Curtin, Pennsylvania. It mustered into State service July and August, 1861. 
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.
Company A Men recruited in Juniata County - See Roster
Company B Men recruited at Athensville, Montgomery County - See Roster
Company C Men recruited in Mifflin County - See Roster
Company D Men recruited in Clinton and Cameron Counties - See Roster
Company E Men recruited in Centre County - See Roster
Company F Men recruited at Carmichael's, Green County- See Roster
Company G Men recruited in Dauphine and Blair Counties- See Roster
Company H Men recruited in Fayette County - See Roster
Company I Men recruited in Washington County - See Roster
Company K Men recruited in Allegheny and Washington Counties - See Roster
Company L Men recruited in Berks, Lebanon and Lancaster Counties - See Roster
Company M Men recruited in Berks County- See Roster
Unassigned Recruited from various counties. May have been discharged from a company above. - See Roster
- 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.
- Pennsylvania in the Civil War-Pennsylvania Roots. Gives history of the regiment. Lists muster rolls and other sources for information.
- Lloyd, William Penn. "History of the First Reg't. Pennsylvania Reserve Cavalry, from Its Organization, August, 1861, to September, 1864 With List of Names of All Officers and Enlisted Men Who Have Ever Belonged to the Regiment, and Remarks Attached to Each Name, Noting Change, &C". Philadelphia: King & Baird, Printers, 1864.
- National Park Service, The Civil War Soldiers and Sailors System, (accessed 6 December 2010).