Harvey Clark (1807-1858) was a missionary, settler, and educator who, along with his wife, Emeline and Tabitha Moffat Brown, founded the Tualatin Academy in Forest Grove, Oregon Territory. The collection consists of an "indenture" from the Clarks to the "President of the Tualatin Academy and Pacific University" ceding control of the Clarks' Forest Grove land claim.

Robert Carleton Clark (1877–1939) was and educator and historian who served as head of the department of History at the University of Oregon until his death in 1939. The Robert Carleton Clark memorial essays collection contains unpublished works by Clark's former graduate students on a variety of 19th and early 20th century Oregon history topics.

Robert Donald Clark (1910- ) was a professor of speech, author, public speaker, and university president. The Robert D. Clark Papers are comprised of correspondence, schoolwork, speeches, writings, research notes, publications, administrative reports and memoranda, and reference files.

The collection contains a letter dated May 8, 1876, from James Freeman Clarke, addressed to "Dear Sir." In the letter, Clarke thanks the man for sending him issues of a periodical (possibly) titled "Record of the Year," and suggests improvements to the organization of the information.

Samuel Asahel Clarke (1827-1909) was an Oregon newspaperman, historian, and poet. The collection consists of typed transcripts of sections from Clarke's scrap book.

Samuel Asahel Clarke (1827-1909) was an Oregon newspaperman, historian, and poet. The collection consists of five handwritten chapters from Clarke's History of the Modocs.

Clatsop County, Oregon School District No. 1 and J. Munson, entered into a legal agreement regarding land. The collection a legal document between the school district No. 1 and Munson, dated January 9, 1865.

Frederick William Cleator was a forester and conservationist. The collection includes diaries, correspondence, notes, documents, and photographs relating to Cleator's interest in the recreational aspects of national forests and the establishment of the Cascade skyline trail.

Calvin J. Clements (1915-1997) was a writer of television scripts, screenplays, and adventure stories. The collection includes television scripts and one screenplay.

Clergy and Laity Concerned About Vietnam was a pacifist organization that particpated in anti-war and anti-draft activities. Records cover by-laws, reports, correspondence, publications, manuscripts, and legal documents.

James W. Clise (1900-1961) held executive positions in Asbestos Supply Companies and several vermiculite companies and was involved in libertarian political activities. The collection includes correspondence, subject files, personal and business files, speeches, articles, and published letters.

Lauretta M. Cloran was the wife of Timothy Cloran, professor of Romance Languages, University of Oregon. The collection contains thirty-nine diaries (1911-1954) and they include information such as social engagements, menus, entertainments, weather, and occasional local news.

American photographer and graphic artist James Cloutier published a photo essay on Alpine, Oregon in 1977 and a poster map of Eugene, Oregon in 1985. Collection includes contact prints, mounted photographs, and negatives of approximately 70 images used in the illustration of Cloutier's book The Alpine Tavern, about Alpine, Or.

The collection consists of one album of 29 snapshots of railroad construction on coast of Oregon, primarily a steam shovel at work. Some river shots. C. 1910s-1930s. Photographer unidentified.

Photocopy of a letter from Irvin S. Cobb to Bill Brock, Nov. 29, 1940, and typed commentary note on Bill Brock. Also includes additional note on Brock written by Edward Gray.

The collection consists of a series of ten large prints of landscape in the Coburg area of Lane County, Oregon, probably related to development plans. The photographer is unknown.

The collection contains bill of sale to People's Transportation Co. for the steamer Relief, signed by John Cochran and others, on July 1, 1865.

Henry Waldo Coe (1857-1927) was a Portland, Oregon, physician, patron of the arts, and member of the Progressive Party. The collection consists mainly of correspondence including letters from Theodore Roosevelt and the Roosevelt family (1907-1918), and correspondence, clippings and photographs concerning statues of Roosevelt, George Washington, Abraham Lincoln, and Jeanne D'Arc commissioned by Coe.

Urling Campbell Coe (1881-1956) was a physician who practiced in Bend and Portland, Oregon. The collection (1940-1942) contains correspondence, a scrapbook, and material relating to his published recollections, titled Frontier Doctor.

During World War II, Glen Stemmons Coffield (1917-1981) was an intern at the famous Civilian Public Service (CPS) camp for conscientious objectors, Camp Waldport, whose Untide Press published two of his books of poems. Later, he was an active force in the Beat and San Francisco Renaissance scenes throughout his creative career. The Coffield Papers contain Coffield's essays, periodicals, plays, poems/poetry-books, prose and miscellaneous work.

Stephen Coffin (1808-1882) was a pioneer and early Oregon landowner. The collection consists of a deed issued by Coffin for "lots seven and eight" of "block number 5" of the Portland town site.

The papers of Mildred Colbert, author and daughter of a prominent Washington pioneer family, are comprised of biographical material, diaries, correspondence, financial materials, manuscripts, school materials, newspaper clippings, and miscellaneous.

Hallett Everett Cole (1900-1974) spent much of his life assembling a collection of writings, ephemera, and artifacts related to lighter-than-air craft, with an emphasis on Zeppelins. The collection includes newsclippings, ephemera, artifacts, memorabilia, and published writings about Zeppelins and lighter-than-air craft.

Family history written for John S. Cole by his father, Wendell Cole. Includes reminiscences about his family and surroundings. One of Wendell Cole's uncles was George E. Cole, Oregon pioneer.

Sketches of political cartoons concerning city and county issues which appeared in various issues of the Eugene Register-Guard newspaper.

Published political cartoons relating to World War II events. Cartoons were cut from newspapers.

The Aurora Colony was a Christian communal society located in Aurora, Oregon that was populated by nearly 600 Swiss and German emigrants from 1856-1883. Collection contains one manuscript book of lyrics to German and English selections, both hymns and ballads, by a member of this colony.

The collection of tattoo artist business cards is an artificial collection comprised of three binders of business cards for tattoo artists and parlours across the United States. Some international artists are also included in the collection.

Letter from D.W. Collins to his brother, J.L. Collins, regarding a land purchase, Sept. 19, [1876?].

Dean Collins (1887-1969) was an Oregon journalist, writer and poet. The collection includes manuscripts, scrapbooks and memorabilia covering Collins' writing career as well as family correspondence and some financial records.