This is just a small sampling of useful digitized history resources. Keep looking. The collection you want is out there.
American Folklife Center Digital Collections
The Avalon Project, Yale University
Black Oral History Collection, Washington State University
Documenting the American South, University of North Carolina
Documents for the Study of American History, Virtual Library
HathiTrust Digital Library
Historic Washington State Newspapers
Internet Archive
Library of Congress, Digital Collections
Making of American Books, University of Michigan
National Archive
Nines
The Vault, Federal Bureau of Investigation
Washington State Digital Archives
WWW. History, George Mason University