Correspondence with:
Andringa De Kempenaer, W., van
Bakema, Jaap
Erskine, Dorothy
Erskine, Morse
Gray, Delphine
Art History Institute of Utercht State University
Magnée, Robert M.H.
Mendelsohn, Louise
Reinink, A.W.
Singelenberg, P.
Stoop, Corrie
Wijdeveld, Wolfgang
Woude, Johan, van der
Wright, John Lloyd