^Friedrich Zunkel: Hoesch, Leopold. In: New German Biography (NDB). Volume 9, Duncker & Humblot, Berlin 1972, ISBN3-428-00190-7 , p. 366 f. ( Digitized ).
^Justus Hashagen / Fritz Brüggemann : History of the Hoesch Family , Volume 2: From the Age of Religious Unrest to the Present , Cologne 1916
^Horst Mönnich: Departure into the area. Departure to Europe. Hoesch 1871-1971 . Munich: Verlag F. Bruckmann, 1971, ISBN3-7654-1441-7 (anniversary volume of Hoesch Aktiengesellschaft, Dortmund)