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Saturday, October 24, 2026

What is a Genealogical Source?

The simple definition of a genealogically valuable historical record or source is a record created at or near the time of an event by someone who participated in it, witnessed it, or had an official duty to record it. Genealogically valuable records are not limited to a particular era or format; an oral history or personal recollection from a relative fits this description just as well as an archival document.

Unfortunately, the word "source" often carries multiple meanings. In genealogical practice, what we often need most is a clear record of where that source resides, that is a citation telling exactly where and how the information was obtained. Over a lifetime of reading footnotes, I have found that few explain this access route in detail. Most merely cite a title or publication without indicating where a researcher might actually locate it. Citations vary widely in style and depth, but even a straightforward bibliographic citation can establish this connection:

Here is a perfectly acceptable citation to a book. 

Bennett, Archibald F. A Guide for Genealogical Research. Genealogical Society of the Church of Jesus Christ of Latter-day Saints, 1956.

From a genealogical perspective, the citation is missing the key element of where the book was found. In this case, the book is still subject to copyright protection and is only available in libraries and for purchase online. If the citation included a reference to the location of the book, subsequent researchers would not have to go through and try to find the book themselves. Another example of the need for specificity is a citation such as this one for this record:


“Santa Ana. Confirmation Records 1730–1736.” Accessed October 24, 2026. 

This citation tells us where the record was found. However, that particular set of records has 835 images, and lacking a more exact citation, I would possibly have to go through all 835 records to find this particular image. Here is a more complete citation:

“Santa Ana. Confirmation Records 1730–1736.” Accessed October 24, 2026. https://www.familysearch.org/ark:/61903/3:1:33SQ-GGZK-8NV?cat=koha%3A686299&view=explore&lang=en&groupId=M986-8MC

Fortunately, many of the online genealogy programs have a way to save a complete citation to a specific record. However, this type of feature is not universal, and occasionally you will get a citation to the entire set of records. Here is the citation to the record from FamilySearch.org.

"Santa Ana, Oaxaca, Mexico records," images, FamilySearch (https://www.familysearch.org/ark:/61903/3:1:33SQ-GGZK-8NV?view=explore : Oct 24, 2026), image 14 of 103; Archivo Diocesano de Oaxaca. Image Group Number: 004782273

Both these citations take you to the original document. Another important reason for having more specific citations is that you, in doing your own research, may need to go back and look at the original record. Without a specific citation, you may end up doing the research over again.

There are a number of programs which will automate the process of creating citations. A free app is Zotero.org from the Massachusetts Institute of Technology. 

Be sure and remember that the source is the description of the origin of the information. The citation is the format in which it is presented. 

There are possibly hundreds of different citation formats. However, genealogists primarily use the Chicago Manual of Style. If you use an app such as Zotero.org, the app itself will format your citations in the style you select. 



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