Some suggestions for where to find primary sources:
Books:
Use the "All Fields" search and try one of these options (depends on your topic)
To find a collection of primary documents related to your topic:
Do an "All Fields" search on Your topic and the word "sources" Example: Cold War sources
To find letters by a person:
Do an "All Fields" search on the name of a person and the word "correspondence" (correspondence is another word for letters) Example: Jackie Robinson correspondence
To find first-hand account of an event:
Do an "All Fields" search on the event and the term "personal narratives" Example: Civil war personal narratives
A place to start:
American Decades: Primary Sources - this source has a variety of primary sources such as transcripts, ads, reports related to big historical events in the last century. This sources is available in Gale Virtual Reference Library. The library also has this source in print in the reference area: REF E169.1 .A471977 2004
For articles:
Academic Search Premier - there are some publications, including the Congressional Digest, Vital Speeches of the Day, The Nation, and Foreign Affairs indexed back to before 1945 - most results will be from between 1975-2013. You can also search for a topic and use the advanced search screen to limit to primary documents.
National Newspapers Expanded - Full-text collection of national newspapers: Christian Science Monitor, Los Angeles Times, New York Times, Wall Street Journal, and Washington Post. Indexing only goes back to 1980
Newspaper Source Plus- 860 full-text newspapers, but only back to 2002
Ethnic Newswatch - Multidisciplinary, full-text collection of the newspapers, magazines and journals from ethnic, minority and native presses. Covers current and historical topics. Searchable in both English and Spanish. Oldest articles from about 1959.
CQ Electronic Library - This is the best database for government documents. Documents described as "overviews" or "legislative chronologies" would not qualify as primary sources.
**Vital Speeches of the Day - this is a great resource for finding speeches by prominent people. This title is available in full text in Academic Search Premier back to 1934. The library also owns Vital Speeches of the Day in print back to 1958.
**If you are looking for pictures - of clothing or household items or people from a certain era, Life has a lot of photographs and we have Life magazine from 1937-1972 and 1990-2000 in print and 1978-1990 in microfiche
Other databses with primary sources
African American Experience
American Government
American Indian Expierience
CQ Public Affairs
Latino American Experience
I think the databases above are the best ones for your project, but to see a list of all the library databases, go here.
Readers' Guide to Periodical Literature we have this index back to 1901. This is just an index, so if you find an article that you like, you will need to check our journal list to see if we own the magazine or journal you need.
New York Times Index - we have this index back to 1955 and we have the New York Times on microfilm back to 1955. You may want to search the archive at NYtimes.com instead of using the printed index and then get the article from the microfilm.
Los Angeles Times Index - we have this print index back to 1972 and we have the newspaper back to 1972 in microfilm.
Article from May 4, 1957 by Dalton Trumbo in The Nation
Mr. Stripling: Are you now or have you ever been a member of the Communist Party, Mr. Dmytryk?
Mr. Dmytryk: Well, Mr. Stripling, I think that there is a question of constitutional rights involved here. I don't believe that you have—
The Chairman: When did you learn about the Constitution? Tell me when you learned about the Constitution?
Mr. Dmytryk: I will be glad to answer that question, Mr. Chairman. I first learned about the Constitution in high school and again—
Mr. McDowell: Let's have the answer to the other question.
Mr. Dmytryk: I was asked when I learned about the Constitution.
Mr. Stripling: I believe the first question, Mr. Dmytryk, was: Are you now, or have you ever been, a member of the Communist Party?
Mr. Dmytryk: All right, gentlemen, if you will keep your questions simple, and one at a time, I will be glad to answer.
Mr. Stripling: That is very simple.
Mr. Dmytryk: The Chairman asked me another question.
The Chairman: Never mind my question. I will withdraw the question.
Mr. Dmytryk: I have been advised that there is a question of constitutional rights involved. The Constitution does not ask that such a question be answered in the way that Mr. Stripling wants it answered. I think that what organizations I belong to, what I think, and what I say cannot be questioned by this Committee.
Mr. Stripling: Then you refuse to answer the question?
Mr. Dmytryk: I do not refuse to answer it. I answered it in my own way.
Mr. Stripling: You haven't answered whether or not you are a member of the Communist Party.
Mr. Dmytryk: I answered by saying I do not think you have the right to ask—
Mr. Stripling: Mr. Chairman, it is apparent that the witness is pursuing the same line as the other witnesses.
The Chairman: The witness is excused.