found: Schulenburg, W. Päd. Massnahmen zur Intensivierung d. Handwerkslehre, 1957:t.p. (Universität zu Köln)
found: Its Vorles.verz., SS 1982:t.p. (Universität zu Köln)
found: Miscellanea in honorem M. Schwarzbach, 1967:t.p. (Universität Köln)
found: Binding, G. Die Bauten der Universität zu Köln, 1988:t.p. verso (Kölner Universität)
found: Tordesillas y sus consecuencias, 1995:t.p. (Universidad de Colonia)
found: Basic Ewe for foreign students, 2013:preface (University of Cologne, Germany)
found: University of Cologne website, A small history of Cologne University, viewed Oct. 21, 2013(600th anniversary in 1988; Pope Urban VI complied with the city of Cologne's request for an allowance to establish a Studium Generale on May 21, 1388; on Dec. 22 the city pledged to found, maintain and patronize the new universitas; lectures began Jan. 6, 1389)
