PHILOSOPHISCHE PROBLEME
Written by Harald Hoffding. Stock no 990436. Published by O.R. Reisland. 1903.

DAS MITLEID IN DER NEUEREN ETHIK
Written by Willy Geissler. Stock no 990330. Published by C.A. Kaemmerer. 1903.

UNTERSUCHUNGEN UBER DAS RAUMLICHE POLARSYSTEM
Written by Georg Beyer. Stock no 1208331. Published by A. Neumann. 1868.

DAS GESCHICHTLICHE WERDEN CHRISTLICHER
Written by Julius Winter. Stock no 990287. Published by Bernhard Richter. 1903.

DIE RHETORIK DER GRIECHEN UND ROMER IN SYSTEMATISCHER UBERSICHT
Written by Richard Volkmann. Stock no 990453. Published by B.G. Teubner. 1874.

DAS AUSGEHENDE MITTELALTER
Written by Gerhard Ficker. Stock no 990308. Published by Johann Ambrosius Barth. 1903.

HANS HUCKEBEIN DER UNGLUCKSRABE/DAS PUSTEROHR
Written by Wilhelm Busch. Stock no 652936. Published by Loewes..

DAS BUSCHEL VON KURVEN 4TER ORDNUNG MIT 3 FESTEN DOPPELPUNKTEN UND 4 FESTEN EINFACHEN PUNKTEN
Written by Dr. Pyrkosch. Stock no 1208328. Published by Grass, Barth & Comp. (w. Friedrich). 1907.

SYLLABUS DER PFLANZENFAMILIEN: EINE UBERSICHT UBER DAS GESAMTE PFLANZENSYSTEM
Written by Adolf Engler. Stock no 2140393. Published by Verlag Von Gebruder Borntraeger. Circa. 1924.

ERNST HACKELS NATURPHILOSOPHIE
Written by Hans Belart. Stock no 990456. Published by Franz Wunder. 1905.

ZUR NEUESTEN GESCHICHTE DES ONTOLOGISCHEN GOTTESBEWEISES
Written by Josef Bohatec. Stock no 990333. Published by A. Deichert'Sche. 1906.

ALLGEMEINE GESCHICHTE DER PHILOSOPHIE
Written by Paul Deussen. Stock no 990454. Published by F.A. Brockhaus. 1911.