Correspondence and papers from a folder labelled 'Astro, and Earth Moon and Planets'. Correspondence between ZK, D. Reidel Publishing Company and academics regarding papers for Astrophysics and Space Science. An International Journal of Cosmic Physics, known as 'Astro' and Earth, Moon and Planets. International Journal of Comparative Planetology. Both folders relate largely to Astrophysics and Space Science.
ZK founded the scientific journals Astrophysics and Space Science (1962) and Earth, Moon and Planets (1969).
The Editor-in-Chief was ZK supported by sub-editors and a rotating editorial board. The journal's editorial office was The Department of Astronomy at the University of Manchester.
ZK/EBF correspondence includes: the new Astro desk editor, Hermine Vloemans; sequences of contents; proceedings of NATO/ASI Active Close Binaries; editor's proofs; and changes to editorial board.
Other material includes: ZK statement of royalties; proofs and revisions; list of 'Journals in Natural and Applied Sciences', Kluwer academic publishers, 1991; outlines of a book by ZK, 'Mathematical Theory of Stellar Eclipses'; revisions for ZK's book The Roche Problem; Astro 'Journal Production Status'; abstract of papers; Bibliographic name index for Vol. 33 Earth, Moon and Planets; and Astro postal expenses.