Image.  Carl Hayden

Hayden Arizona Pioneer Biographies Collection

Support for this project was graciously provided by Jim and Sue Chilton.

Welcome to the Hayden Pioneer Biographies Collection! This web site provides access to the text of biographical essays that were written or compiled by Senator Carl Hayden during his legendary career in the US Senate and the US House of Representatives. Hayden compiled lists of pioneers from the 1860, 1864 and 1870 U.S. Censuses for the Arizona/New Mexico and Arizona territories and began collecting data on each of the names listed for the geographic area that eventually became the state of Arizona. The Senator compiled research data for 1,927 individuals, and completed biographical texts for 830 of them. The pioneers included many military personnel, Mexican-American settlers, and some individuals briefly passing through the territory.

The Hayden Pioneer Biographical Files came to Arizona State University in 1969 along with the senator's other personal research files and congressional and senatorial papers. They were originally kept in Senator Hayden's office on the fourth floor of Hayden Library and were transferred to the Arizona Collection after the senator's demise in 1972.

The 830 pioneers listed at this site are only those for whom Senator Hayden completed biographical texts, and only the biographical texts have been scanned. The complete files, however, typically include many other valuable source materials, such as transcriptions of newspaper articles and obituaries, military records, and veterans pension files.

A complete list of the 1,921 pioneer biographical research files can be viewed by searching for the keywords HAY BIO in the call number of the Arizona and Southwest Index. The Carl Hayden Papers also contain a substantial quantity of raw research materials on territorial Arizona that may have been used in the production of the biographies but were kept separately from the Pioneer Biographical Files.


The original Hayden Pioneer Biographies were scanned using Adobe Capture® software to enable document image presentation and manipulation. Users accessing this web page through ASU Library One Search will automatically invoke the Adobe Acrobat® viewer when they click on an individiual biography. The version of Adobe Acrobat® includes image zooming and framing functionalities that enhance legibility, as some of the original carbon typescripts resulted in poor resolution scans. Researchers acessing this information from outside the ASU Library will need the Adobe Acrobat® viewer, which can be downloaded free from Adobe. Remote researchers may also experience significant delays in downloading biographical texts due to large files sizes and the slow transmission speeds of standard telephone lines. Future enhancements to this site may include links from Arizona and Southwest Index entries and searching functionalities that will enable full text searching across all of the biographical essays.