The collection contains issues of the Sacramento Daily Union newspaper in bound volumes from 1857 through 1904, and from May 1937 through October 1948. There are also a small number of single issues of the newspaper from 1852 to 1870. The collection also includes a card catalog subject index of the newspaper from ca. 1910 to 1965 and associated research files that include photographs and clippings kept by the Union's library.

The Sacramento Daily Union was founded in 1851 in Sacramento at 21 J Street, with its first issue published March 19, 1851. Its first editor was Dr. John F. Morse. In 1852, the newspaper moved to 121 J Street. Several newspapers were published in Sacramento during the Gold Rush, but the conservative Daily Union and its rival the progressive Sacramento Bee (founded in 1857) were the only two to survive into the next century.

150.55 Linear Feet (249 volumes, 16 card catalog drawers, 271 pamphlet boxes, 1 manuscript box, several loose single issues)

All requests to publish or quote from private manuscripts held by the Center for Sacramento History (CSH) must be submitted in writing to csh@cityofsacramento.org. Permission for publication is given on behalf of CSH as the owner of the physical items and is not intended to include or imply permission of the copyright holder, which must also be obtained by the patron. No permission is necessary to publish or quote from public records.

The collection is open for research.