= With a copy of the book Het kamp aan de bosrand by ARIE HAAKS (1st and only ed., Apeldoorn, 1959).
Idem. (Snelle Panter). Four drawing for the illustrations of "Snelle Panter", pen and ink and white gouache, each ±17x11 cm.
= With a copy of the book.
Idem (after?) (Piraten aan boord). (Strijd in sneeuw en ijs). Two original gouaches for the dustwr./ frontcover, 33x23,3 cm. and 34,5x25 cm. - WITH the original typescripts by PETER DE HAAS for the books with annots. in pen.
= Variant (?) designs for the covers or designs after R. VAN GIFFEN. With copies of the books by PETER DE HAAS. Part 1 and 2 of the Eekhoorn series.