The index card of Field Musician James Geidner, Company G, 47th Pennsylvania Volunteer Infantry (Pennsylvania Civil War Veterans Card File, 1861-1866, courtesy of the Pennsylvania State Archives).

The Pennsylvania Civil War Veterans Index Card File, 1861-1866 is one of three resources that beginning, medium and advanced researchers frequently turn to for help in determining which Pennsylvania military unit(s) a soldier served with during the American Civil War. Physically housed at the Pennsylvania State Archives in Harrisburg, Pennsylvania, as part of the Pennsylvania Department of Military and Veterans Affairs’ archives (Series RG-019-ADJT-12), this collection of individual index cards was preserved on microfilm decades ago by the Commonwealth of Pennsylvania and then later digitized and made available, free of charge, on the State Archives’ website via a user-friendly portal, enabling researchers nationwide to search or browse, alphabetically, through each of the index cards that had been created for the majority of Pennsylvanians who had served with the Union Army (as well as the non-Pennsylvanians who had also served with Pennsylvania units). According to Pennsylvania State Archives personnel:

“These 3 x 5 cards were initially prepared to serve as an index to Samuel Penniman Bates’ History of Pennsylvania Volunteers, 1861-1865, (Harrisburg, 1869-1871). The Office of the Adjutant General later expanded the scope of the cards by transcribing onto them data found on the original documents. Among the information generally found are the soldiers’ names, military units, and ages at enrollment, the dates and places where enrolled, the dates and places where mustered in, and the dates of discharge. Physical descriptions (complexion, height, color of hair and eyes), residences, birthplaces, promotions and wounds also are sometimes included. The listing is not comprehensive.”

That last sentence is an important caveat because, while this index card system can be a helpful primary source for basic data about individual soldiers, it does not contain the name of every single Pennsylvanian who served with the Union Army during the Civil War. In addition, a significant number of the index cards contain errors (incorrect spellings of soldiers’ names, soldiers labeled as deserters when they had actually been honorably discharged or hospitalized to due battle wounds or illness, etc.).

* Note: Those faults are understandable, however, when considering that the index cards were based on data compiled by Samuel Bates for his History of Pennsylvania Volunteers, 1861-5 — a five-volume series of books that included rosters of soldiers for each Pennsylvania regiment that served during the American Civil War. The errors in Bates’ History are also understandable as you come to understand that Samuel Bates was assigned the task, during the mid-1860s, of summarizing thousands and thousands of muster rolls generated by Pennsylvania military units during the war — many of which were also filled with errors because the army clerks assigned to maintain those rolls were often unable to create accurate records as their regiments were being marched into battle or from one duty station to another.

Another more recent issue with this system is that its portal to the digitized index cards that was so easy to browse and search for free is now no longer available on the Pennsylvania State Archives’ website. The index cards are still available, however, to researchers who travel to Harrisburg to view the microfilmed version at the State Archives, as well as to online researchers via Ancestry.com as “Pennsylvania, U.S., Veterans Card Files, 1775-1948.” (Although Ancestry.com is a subscription-based genealogy service that generally requires users to pay for access to its records collections, the Commonwealth of Pennsylvania entered into a partnership with Ancestry.com several years ago “to digitize family history records in the State Archives and make them available online.” As part of that agreement, Ancestry.com created Ancestry.com Pennsylvania to provide free access to Pennsylvania residents to the Pennsylvania State Archives records it has digitized. If you reside in Pennsylvania and want to learn more about how you may obtain free access to those records, please contact the Pennsylvania State Archives for guidance. If you reside elsewhere, check with your local library to see if it offers access to Ancestry.com as part of its service to library users.)

Despite those issues, the Pennsylvania Civil War Veterans Index Card File, 1861-1866 remains a useful tool for finding your 47th Pennsylvanian because it may help you confirm your ancestor’s place of residence during the early 1860s and may also provide you with an approximate year of birth for him.

Additional Important Tips for Using This Resource

The index card of William H. Egle, M.D. shows that this soldier served with the 47th Pennsylvania Militia, Emergency of 1863 and not the 47th Pennsylvania Volunteer Infantry (Pennsylvania Civil War Veterans Card File, 1861-1866, courtesy of the Pennsylvania State Archives).

If you are able to find an index card for your ancestor in the Pennsylvania Civil War Veterans Index Card File, 1861-1866, pay particular attention to the top line of that card’s data. That data identifies the regiment number and company letter of his military unit. Then also look at the lines of data below. (Those lines of text note the start and dates of his service.) If you see dates of service indicating that your ancestor served between mid-April 1861 and the end of July 1861, you will realize that the regiment number in the top line was not “47.” This means that your ancestor performed what is known as “Three Months’ Service,” that he actually served with a different regiment during the first months of the war, and that he then may also have served with the 47th Pennsylvania Volunteer Infantry at a later date (because the 47th Pennsylvania Volunteer Infantry was not established until August 5, 1861). So, you’re one of those 47th Pennsylvania descendants who needs to look for two or more index cards in the Pennsylvania Civil War Veterans Index Card File, 1861-1866 — one for your ancestor’s “Three Month Service” and one for his service with the 47th Pennsylvania Volunteer Infantry (which was initially most likely a three-year term of enlistment, but may have been a one or two-year term, depending on how late he was enrolled for service).

HOWEVER, if you see dates of service indicating that your ancestor served at any point during 1863 — AND, if the top line indicates that his regiment was “47 I Mil 63” — this means that your ancestor DID NOT serve with the 47th Pennsylvania Volunteer Infantry. He served with the 47th Pennsylvania Militia, Emergency of 1863. (The soldiers who served with that militia group were also brave and honorable men, but they were part of a very different unit that had a very different mission. Learn more about that militia unit here.)

Regardless of whether or not your ancestor “performed Three Months’ Service” during the earliest part of the Civil War, if you see dates of service indicating that your ancestor served at any point between August 5, 1861 and early January 1866 — AND if the top line indicates that his regiment was “47 I” — then you can be reasonably confident that your ancestor actually did serve with the 47th Pennsylvania Volunteer Infantry (also known as the 47th Pennsylvania Volunteers or the 47th Pennsylvania Veteran Volunteers). So, you should make yourself a cup of coffee or tea, find a comfy chair, and spend some quality time exploring our website to learn more about the history-making 47th Pennsylvania Volunteer Infantry.

Best wishes for success with your research! Let us know what you learn about your ancestor!!

Sources:

1. “Ancestry Pennsylvania,” in “Agencies: Pennsylvania Historical and Museum Commission,” in “Pennsylvania State Archives.” Harrisburg, Pennsylvania: Commonwealth of Pennsylvania, retrieved online October 25, 2025.
2. “Civil War Veterans Card File, 1861-1866” (resource description). Harrisburg, Pennsylvania: Pennsylvania State Archives, retrieved online October 25, 2025.
3. “Pennsylvania,” in Collections. Lehi, Utah: Ancestry.com Operations, Inc., 2021 (retrieved online October 25, 2025).