O & K steam locomotives works list, 1892-1945 /
Fricke, Klaus.
Bude, Roland.
Murray, Martin.
Bristol Arley Hall Publications
[1979]
Originally published: in German. Buschhoven : Verlag Railroadiana, 1978
Bibliography: p.73-74
Orenstein und Koppel Aktiengesellschaft.
Locomotives