You may find several helpful collections-manuscripts, photographs, etc-in the OSU Archives. Find a list of all records here.
Highlights of the collection include:
NWDA Northwest Digital Archives indexes descriptions of primary sources (called finding aids) in the Northwestern United States. The finding aids list correspondence, diaries, photographs and other materials. Digital reproductions of primary sources are available in some cases.
NARA databases and tools to online documents from the National Archives and Records Administration.
Find historical newspapers in microfilm on The Valley Library 3rd floor.
Here is a list of historical Oregon newspapers.
Here are national newspapers like New York Times, Wall Street Journal, and Christian Science Monitor, The Daily Worker, the American Communist Party newspaper, and The Chicago Defender.
America's Historical Newspapers, 1690-1876, full-text. online
American Periodicals Series , 1740-1900, full-text online.
Alternative Press Index, 1991-present, indexes 200+ alternative, radical and left periodicals.
Lexis Nexis Academic National and International News
PressDisplay International News
Statistical Abstracts current census info
Historical Statistics of the United States historical census info, 1610-2000
Use the LexisNexis Congressional Index to identify congressional publications (hearings, serial set, house/senate reports and documents, etc) from 1789-present. Once identified, then find the full text in print, microfiche, or online depending on availability.
OSU Libraries' guide to Government Information, gives an overview of government publications and how to get them. See this guide for information about Congressional Publications at OSU. Includes links to Congressional Hearings.
American Memory Project's Century of Lawmaking contains Congressional materials from 1774-1875. This includes bills, journals, debates, and documents from Congress. Century of Lawmaking for a New Nation: U.S. Congressional Documents and Debates
Some additional hearings have been digitized for example:
Immigration Hearings has samples online.
A wealth of rich primary sources can be found online and in The Valley Library. Examples include:
Popular periodicals like women's magazines and national newsmagazines for nineteenth and twentieth centuries
Partisan journals like the Nation (left), the New Republic (liberal), and National Review (conservative)
On-line periodicals from the 19th century at Cornell University/University of Michigan's Making of America sites (http://cdl.library.cornell.edu/moa/about.html and http://www.umdl.umich.edu/moa)
On-line collections of primary documents which can be searched by subject/key word. Go to http://www.lib.washington.edu/subject/History/RUSA/#two
for a bunch of them.
Some examples:
"Documenting the American South" (http://docsouth.unc.edu)
"The MLK, Jr. Papers" (www.stanford.edu/group/King/mlkpapers/)
A plethora of collections from the Library of Congress American Memories project (http://memory.loc.gov/ammem/index.html)
Collections from the Gilder Lehrman Institute of American History (www.gilderlehrman.org)
"Immigration to the United States, 1789-1930" (http://ocp.hul.harvard.edu/immigration/)
There are a number of tutorials on the web, some examples are: