3rd Regiment, Pennsylvania Infantry (3 months, 1861)

Historical Sketch:
Col., Francis P. Minier; Lieut.-Col., John M. Power; Maj. Oliver M. Irvine. The 3d regiment, recruited in Blair, Cambria and Allegheny counties, was mustered in for three months' service, April 20, 1861, at Harrisburg, and left the same day for Cockeysville. It then returned to York and was next ordered to Chambersburg, where it was assigned to the 2nd brigade, 2nd division. After a short time in camp at Funkstown it moved with Gen. Patterson's army to Martinsburg. It was assigned to guard duty at the supply depot at Williamsport, and remained there until July 26. It was mustered out on July 29. Roster:
The Roster of this unit contains the names of 999 men.
Source:
The Union Army by Federal Publishing Company, 1908 - Volume 1
Bibliography:

Barcousky, Len. Civil War Pittsburgh: Forge of the Union. Charleston, South Carolina: The History Press, 2013. ISBN 9781626190818.

Blair, William and William Pencak, editors. Making and Remaking Pennsylvania's Civil War. University Park, Pennsylvania: Penn State University Press, 2004.

Fox, Arthur B. Our Honored Dead: Alleghany County, Pennsylvania, in the American Civil War. Chicora, Pennsylvania: Mechling Bookbindery, 2008.

Fox, Arthur B. Pittsburgh During the American Civil War 1860–1865. Chicora, Pennsylvania: Mechling Bookbindery, 2002.

Greater Chambersburg Chamber of Commerce. Southern Revenge: Civil War History of Chambersburg, Pennsylvania. Chambersburg, Pennsylvania: Greater Chambersburg Chamber of Commerce, 1989.

Miller, William J. The Training of an Army: Camp Curtin and the North's Civil War. Shippensburg, Pennsylvania: White Mane, 1990.

Sandou, Robert M. Deserter County: Civil War Opposition in the Pennsylvania Appalachians. Fordham University Press, 2009.

Skinner, George W., ed. Pennsylvania at Chickamauga and Chattanooga: Ceremonies at the Dedication of the Monuments Erected by the Commonwealth of Pennsylvania. Harrisburg, Pennsylvania: Wm. Stanley Ray, State Printer, 1897.

Taylor, Frank H. Philadelphia in the Civil War. Philadelphia, Pennsylvania: The City, 1913.

Wingert, Cooper H. Harrisburg and the Civil War: Defending the Keystone of the Union. Charleston, South Carolina: The History Press, 2013. ISBN 9781626190412.

Young, Ronald C. Lancaster County, Pennsylvania in the Civil War. Lancaster, Pennsylvania: published by the author, 2003.