"Presents an exchange of letters between the president of the United States and the president of the Democratic Republic of Vietnam, concerning the peace process in Vietnam during the height of the Vietnam War in 1969. "
"Presents the Vietnamese president's letter of response to United States President Lyndon B. Johnson's letter intended to end the United States' conflict with Vietnam. "
"Presents the United States president's letter to Ho Chi Minh, president of the Democratic Republic of Vietnam on February 8, 1967, about his proposal for negotiation of the United States' conflict with Vietnam."
Suggested terms to look for include - diary, diaries, letters, papers, documents, documentary or correspondence.
Combine these these terms with the event or person you are researching. (example: civil war diary)
Also search by subject for specific people and events, then scan the titles for those keywords or others such as memoirs, autobiography, report, or personal narratives.
An additional option is to do a search on a topic and use the "Resource Type" limiter on the left side of the results and choose the option "Primary Sources" - please note this is extremely limiting as most primary source materials are not marked in records with this resource type and you will miss seeing a large number of useful items.
Off campus access instructions (for e-books)
On Revolution; Selected Writings, 1920-66 by 