Sub-series contains correspondence to and from Poul Anderson.

Assorted materials related to Sherlock Holmes, primarily organizational.

Numbers 1-4 to 1-6, 1-12, 2-1 to 2-3, 2-8, and 3-11.

This series contains five sub-series that include manuscripts, drafts, galley proofs, and artwork for fictional works by Poul Anderson, Karen Anderson, works they collaborated on, and some pieces in which the author(s) are not identified. Also included is one sub-series containing publishing contracts; these are primarily related to Poul's works with one folder pertaining to Karen's work.

This series contains five sub-series that include manuscripts, drafts, galley proofs, and artwork for fictional works by Poul Anderson, Karen Anderson, works they collaborated on, and some pieces in which the author(s) are not identified. Also included is one sub-series containing publishing contracts; these are primarily related to Poul's works with one folder pertaining to Karen's work.

This series contains a range of materials that serve as research, background material, and notes for Poul and Karen's creative work. Materials include notes, maps, star charts, art, clippings, and more.

This series contains a range of materials that serve as research, background material, and notes for Poul and Karen's creative work. Materials include notes, maps, star charts, art, clippings, and more.

This series contains a range of materials that serve as research, background material, and notes for Poul and Karen's creative work. Materials include notes, maps, star charts, art, clippings, and more.

Sub-series contains correspondence to the Anderson family.

Ssub-series contains correspondence to and from Karen Anderson.