The Karl Popper-Library holds a complete copy of the Nachlass of Karl Popper, which is housed at the Hoover Institution Archives, Stanford (California). The papers are indexed by the catalogue Sir Karl Popper. A Register of his Papers in the Hoover Institution Archives. This catalogue is available also in hard copy.

The two sections of the papers are kept in 460 boxes (files of hard copies) and - the incremental material - on 91 reels of microfilm. The order is as given by the Hoover Institution Archives:

Papers (hard copies):	1 - 254, 459 - 460	Speeches, Lectures, Articles	1928 - 1986
	255 - 365, 460	Correspondence	1932 - 1987
	366 - 382	Course material	1937 - 1970
	383 - 394	Various papers	1945 - 1985
	395 - 407, 460	Biographical files	1936 - 1985
	408 - 458, 460	Writings by others	1896 - 1985
Incremental Material (Microfilms and PDF-a*):		Speeches, Lectures, Articles	1933 - 1998
		Correspondence	1932 - 1995
	568 - 573	Biographical files	1936 - 1994
	573 - 581	Writings by others	1946 - 1993

*) The digitization of the Incremental Material in the Karl Popper Library has been made possible by a generous grant from the Karl Popper Charitable Trust. For copyright reasons access to these PDF-a-Files is limited to visitors on site. Information is abailable from Mag.^a Nicole Sager, E-Mail: nicole.sager(at)uni-klu.ac.at.