Marcel van der Linden (1952) is Research Director of the International Institute of Social History, Professor of Social Movement History at the University of Amsterdam, and a member of the editorial board of the Karl Marx/Friedrich Engels Gesamtausgabe (MEGA).Karl Heinz Roth (1942) is an historian and medical doctor. He has been a co-founder of the Hamburg Foundation for Social History of the 20th Century. His numerous publications deal with labour, business, economic, social, and science history.

Marcel van der Linden (1952) is Research Director of the International Institute of Social History, Professor of Social Movement History at the University of Amsterdam, and a member of the editorial board of the Karl Marx/Friedrich Engels Gesamtausgabe (MEGA).Karl Heinz Roth (1942) is an historian and medical doctor. He has been a co-founder of the Hamburg Foundation for Social History of the 20th Century. His numerous publications deal with labour, business, economic, social, and science history.

Marcel van der Linden (1952) is Research Director of the International Institute of Social History, Professor of Social Movement History at the University of Amsterdam, and a member of the editorial board of the Karl Marx/Friedrich Engels Gesamtausgabe (MEGA).Karl Heinz Roth (1942) is an historian and medical doctor. He has been a co-founder of the Hamburg Foundation for Social History of the 20th Century. His numerous publications deal with labour, business, economic, social, and science history.