Description from guide:
Professor Norman Malcolm, of Cornell University, and Professor Georg Henrik von Wright, Academy of Finland, Helsinki, have collected the papers by assignment of the literary trustees of the Wittgenstein estate. The originals are primarily in the library of Trinity College in Cambridge, and in the hands of a private owner in Vienna; original negative microfilms were made partly in England and partly at Cornell. The final negative microfilms were made at Cornell, and are held by Cornell University Libraries in Ithaca, New York.

CRL holds reels 1–21.