Most, but not all, of Magnusson's published works are represented. Also included here are the translations that Magnusson undertook on the work of the Icelandic author and Nobel prize winning novelist Halldór Laxness (1902-1998). Material relating to Magnusson's book on Mastermind "I've started so I'll finish" can be found in the Mastermind section.

The material includes correspondence relating to book proposals, research notes compiled by Magnusson while working on his books, and draft copies of chapters that were submitted in advance of publication. There is a futher file containing newspaper cuttings of reviews of his published works which Magnusson collected throughout his life.