Explore over 25,000 items digitized from the Special Collections and Archives collections.
The Online Archive is a growing database with materials added every day, featuring photographs, letters, videos, audio, architectural drawings, and more. CSU Digital Archive
Researching Cal Poly? There are more databases to search, learn more here.
When you search for digitized primary sources online, you may be searching several categories of information.
Archivists-provided description
Archives staff write descriptions and other metadata to describe the items. For example, if the item is a photo, they may include a title supplied by the creator, but then add additional information like a description of the image depicted and an approximate date span. They may use terms that were current to their time period, but might already be outdated and have not yet been updated.
Full-Text Searching Tips
For text-based items, if the item is machine-readable through OCR or through a transcription created by the archives, you can search within the text. When you search the historic text, you will want to think about the terms that were used at the time. An example--when researching the experiences of women at Cal Poly, historic texts have used many terms, including "girls," "coeds," and "skirts" as well as other outdated terms. Sometimes they misspell words.
Tips for searching historic text:
Many of our collections have digitized content.
There are two ways to browse what is digitized from a specific collection:
Option 1: From the Online Archive
From the Online Archive home page, click on "Browse All Collections"
From the Online Archive of California:
On the collection page, click on "Online items available"

This is how you can see if a specific folder is digitized in a collection.
You can check to see if a specific folder or item has been digitized by searching the image identifier number (a unique number for each item digitized). To determine the part of the identifier you will search by, visit the inventory of the collection you’re interested in on OAC. When you find the folder you want, note down the 5 areas of the finding aid in the below screenshot, and combine them in order and separated by a dash. For the screenshot example, the string of numbers and letters you would arrive at would be: 002-1-d-01-06
Next, go to the Online Archive's advanced search page, and insert the string from the last step into the All Fields box, adding double quotation marks around the string, as seen in the below screenshot.
Click “Search” and the items that have been digitized from that folder should appear. Note that there are many folders from which no items have been digitized, so a search with no results should not be unexpected.

