The material from the first accession is made up of letters and papers from two of Sraffa's most notable Cambridge correspondents, John Maynard Keynes (items 1 to 89) and Ludwig Wittgenstein (items 90 to 144). Those from Keynes to Sraffa include letters concerning their collaboration in an edition of Hume's Abstract of a treatise on human nature, and attempts to ensure Sraffa's release from interment. Those papers relating to Wittgenstein include tantalizing glimpses of his intellectual relationship with Sraffa.
The material from the second accession contains correspondence and papers giving useful biographical information about various parts of Sraffa's life. This material is arranged as follows: birth/residence certificates (145-148); documents relating to Sraffa;s refusal of the title of Cavaliere nell'Ordine della Corona d'Italia (149-155); article for the Manchester Guardian and its aftermath (156-162); attempts to enter Britain in 1920s (163-166); 1926 Economic Journal article (167-168); family renunciation of Jewish lineage (169-171); Angelo Sraffa and Milan and Bocconi Universities (172-173); death of Angelo Sraffa and subsequent events (174-180a); papers relating to Sraffa's internment and the offer of a post at the New School (181-215); correspondence on various matters (216-229); miscellaneous papers (230-234).
