The Blissiana files and artifacts contain various ephemeral materials to, from, or pertaining to the founders of Dumbarton Oaks, Mildred Barnes Bliss and Robert Woods Bliss, their family, their friends, and their correspondents. The Blissiana collection also contains artifacts, including photographs, digital images, books, records, music scores, and household furnishings relating to Mildred Barnes Bliss and Robert Woods Bliss. Other historic documents pertaining to the Blisses are at the Harvard University Archives, as detailed in Papers of Robert Woods Bliss and Mildred Barnes Bliss, ca. 1860–1969, HUGFP 76.xx.
- Series 1: Archives and Papers
- Series 2: Artifacts: Books
- Series 3: Artifacts: Images (analog)
- Series 4: Artifacts: Images (digital)
- Series 5: Artifacts: Miscellaneous
- Series 6: Artifacts: Recordings
- Series 7: Awards, Citations, Clubs, Committees, Organizations, and Tributes
- Series 8: Bliss Family
- Series 9: Correspondence
- Series 10: Gifts of Mildred and Robert Woods Bliss
- Series 11: Golden Wedding Anniversary (April 14, 1958)
- Series 12: Inventories and Appraisals
- Series 13: Lectures and Speeches
- Series 14: Letters of Introduction and Miscellaneous
- Series 15: Libraries: pertains to the personal libraries of Mildred Barnes Bliss and Robert Woods Bliss, as bequeathed to Dumbarton Oaks, and their dispositions
- Series 16: Loans
- Series 17: Miscellaneous
- Series 18: Music
- Series 19: Tyler Family
- Series 20: Wills and Estates