Collection includes: Nine letters to Eberhard Buchner dated 1909-1928, which include mention of Dada soirees; two letters, 1921, to the president of the German parliament asking for the opportunity to defend himself in front of this body against accusations brought forth in a trial against the Dada movement and Baader as its "Oberdada"; a copy of a letter of protest, 1921, concerning the banning of a lecture by Baader in Dresden; a letter, 1945 April 28, to an unknown correspondent mentioning secret meetings and listing the chapter titles of "Mittgarts Neubau"; circulars and memoranda from ca. 1909-1952, primarily concerning the Berlin Dada, many on "Club Dada" stationary; clippings from German newspapers and other printed ephemera and photographs, 1906-1923, relating both to Baader's involvement in Berlin Dada and to his work as an architect, specifically with "Die Werkstätten für Friedhofskunst," with various designs for monuments. Collection also includes a file of manuscript writings (partially incomplete) including "Das Spiel der Völker" (1916), 43 p.; "Kleine Auswahl für Schulbücher" (1928) and a collection of poems. With a preliminary draft and the final annotated draft of Eberhard Buchner's psychiatric study of Baader, 1909, entitled "Ein Fall von religiöser Wahnbildung"
