Gary L. Austin
R&I Librarian
glaustin@usf.edu
Try searching the internet for digital collections at state historical societies, archives, museums, and universities. many of the sites have been digitizing historical materials and making them available online.
Try searching your topic and the keyword 'archives,' 'digital', or other term.
If you know of a site, you can try using Google's 'site search' capability to search for items within that site. For example, typing this search into Google will give you a list of materials in the USF Digital collection concerning Tampa's Fort Brooke.
site:digitalcommons.usf.edu "fort brooke"
You can also use the 'filetype' search to find specific types of documents
memoir "fort brooke' filetype:pdf
or