For those seeking more background on a historic home, here is another source. The Arizona State Historic Property Inventory is the survey report which was written in 1974 as part of the application for National Historic Residential status. The entry for each property includes a description of the house, information regarding the owner at that time drawings of the house footprint and pictures. Like any history resource, not all information may be accurate. For example, my house is listed as constructed in 1905. The Sanborn insurance map shows the house in 1901. The 1901 Tucson directory lists two men living at the address. Nevertheless, The description and period photos give me an idea of what changes have been made to the house since 1974. Additional work was done in 1993 so some information is from that year.
If you are doing a project requiring historic review, The information will tell you how the property was at the time the historic district was formed. The board will want to retain the details of the house during the period of significance (1860s to 1945). The 1974 survey is the earliest reliable information available.
To find the survey entry for a property start by going to this link: https://drive.google.com/drive/folders/1pl3WLRPQ-f9vEi7Dn-Zt0JTji57Qtjrd?usp=sharing
Property entries are filed in folders by street name. Double click on the folder icon to see the list of properties on that street in street number order. A double click on the street address will open the file with information on that property. This is what the first page should look like: