Arizona Archives Online
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What is Arizona Archives Online (AAO)?

Arizona Archives Online brings together detailed descriptions of archival material about the history of Arizona and other subjects. The archival collections described in AAO are held at institutions across the state including academic libraries, historical institutions, special collections libraries, museums and other libraries and archives in Arizona.
The current iteration of AAO has been made possible by a grant from the U.S. Institute of Museum and Library Services to the Arizona State Library, Archives and Public Records under the provisions of the Library Services and Technology Act (LSTA).
How do I contact AAO?
E-mail questions about AAO to:

Who are the contributors to AAO?

There are currently 14 institutions throughout the state of Arizona that contribute content to Arizona Archives Online:

  • Arizona State University Libraries, Department of Archives and Special Collections
  • Northern Arizona University, Cline Library Special Collections and Archives
  • University of Arizona Library Special Collections
  • University of Arizona Libraries. Center for Creative Photography.
  • Arizona State Museum
  • Museum of Northern Arizona
  • The Arizona Historical Society: Northern/Southern/Papago Park Divisions
  • Sharlot Hall Museum
  • Arizona State Library, History and Archives Division
  • Arizona Historical Foundation
  • Lowell Observatory Library and Archives
  • Heard Museum Billie Jane Baguley Library and Archives
  • Peggy J. Slusser Memorial Philatelic Library

Frequently Asked Questions (FAQ):

What will I find in Arizona Archives Online (AAO)?

By searching or browsing AAO, you will find descriptions of primary source material. All materials described are held at institutions throughout Arizona, and much of it documents Arizona's history. While some descriptions in AAO contain links to digital objects, the focus of AAO is description and most of what you will find will only describe physical materials; in most cases, you will need to contact or visit the institution which holds the materials described on AAO.

What is Archival Description?

Archival description is the practice of describing and sometimes indexing the content of archival documents or archival collections. Products of archival description include library catalog records, repository guides, collection guides (often known as finding aids), websites and specialized databases. Arizona Archives Online is a website that contains searchable finding aids.

What is in a finding aid?

A finding aid is a description of a collection of archival materials. It describes who created the materials, and when, as well as the type of materials, the topics of the collection, how it is organized and why it is significant. The depth of description of an archival collection contained within a finding aid will vary based on local institutional policies and the discretion of the archivist processing the collection.

Why are the collections in Arizona Archives Online not digitized?

Digitization of content on AAO is left to the discretion of the contributing members to the AAO website. Due to funding, digitization resources, copyright restrictions, and staff time many archival holdings described on AAO are not digitized. Some of the collections described on AAO do have links to digitized content. These digital items can be found either linked to local servers or to other digital instances on the internet. Arizona Archives Online was designed to provide digitized content as it becomes available at the discretion of the contributing members. Contact AAO at to inquire as to any future efforts by participating members to digitize specific content.

I am a representative from an Arizona institution, how can I join AAO?

To join AAO, your institution must have descriptions of archival holdings that are ready to go online. AAO staff will help you with coding your descriptive content into Encoded Archival Description (EAD) and placing it online. Contact AAO at: for more information.

Where can I find other online archival content?

A web site maintained by the Library of Congress and the Society of American Archivists entitled: EAD Implementors lists dozens of academic and scientific libraries, cultural institutions and historical societies that host electronic versions of archival finding aids. Visit them at:
Other local and national web sites for electronic archival description include:

Arizona Memory Project:
Arizona Cultural Inventory Project:
Online Archives of California:
Northwest Digital Archives:
Rocky Mountain Online Archive:
Mountain West Digital Library:
Texas Archival Resources Online:
Ohio Link Finding Aid Repository:
North Carolina Exploring Cultural Heritage Online:
Archives Florida: