The book is a reprint of FORUM, twelfth volume number 8, September 1957. The theme issue deals with the designs for the Dutch Bank of the 1954 multiple commission and of the continued multiple commission. Prof. ir. Peutz did not make a design for the multiple commission despite invitation. Prof. J.F. Berghoef made a design for the multiple commission. W.M. Dudok made a design for the multiple commission. Prof. M.F. Duintjer made a design for the multiple commission. Joh.H. Groenewegen made a design for the multiple commission. Prof. ir. C. Wegener Sleeswijk made a design for the multiple assignment. Prof. ir. H.T. Zwiers made a design for the multiple commission. Prof. Wieger Bruin was a member of the Advisory Committee of the multiple commission. Ir. A.R. Hulshof was a member of the Advisory Committee of the multiple commission. Ir. G. Friedhof was a member of the Advisory Committee of the multiple assignment. Prof. M.F. Duintjer made a design for the continued multiple assignment. Prof. Ir. C. Wegener Sleeswijk made a design for the continued multiple commission. Prof. ir. H.T. Zwiers made a design for the continued multiple assignment. Prof. Wieger Bruin was a member of the Advisory Committee of the continued multiple commission. Ir. H. Hoekstra was a member of the Advisory Committee of the continued multiple assignment. Ir. A.R. Hulshof was a member of the Advisory Committee of the continued multiple assignment. Ir. D. Roosenburg was a member of the Advisory Committee of the continued multiple assignment. Ir. A.J. van der Steur was a member of the Advisory Committee of the continued multiple assignment. Ir. N.E. Servatius was a member of the Advisory Committee of the continued multiple assignment. M.F. Duintjer was commissioned to prepare a final plan for the Dutch Bank in 1957.