The collection is arranged into the following series:
Series I, Administration:
Boxes 1-9, correspondence, invoices, run Sheets, contracts, ephemera, publisher packets, legal notices, press releases, freelance vouchers, and other material relating to the operations of Eclipse Enterprises. Includes materials created or edited by employees of Eclipse, but not published by Eclipse.
Series II, Production Materials of Published Works:
Boxes 10-70, Correspondence, Artwork, Inks, Pencils, Published Issues, Proposals, Plots, Scripts, Ephemera, Transparencies, Layouts, Run sheets, and other material relating to published works by Eclipse.
Series III, Production Materials of Unpublished Works:
Boxes 70-77, Correspondence, Artwork, Pencils, Proposals, Plots, Scripts, Layouts, Run and other material relating to published works by Eclipse, and other material relating to unpublished works proposed to or by Eclipse.
Series IV, Mixed Media and Oversized Items:
Boxes 78-79, Mixed Media - Audio/Video items, Oversized material