Het speeltuinwerk in Nederland
Fibo, c. 1950. A series of photos and gouaches for N.U.S.O. (Nederlandse Unie van Speeltuin Organisaties) produced by Fibo Beeldonderwijs for magic lantern. Containing 30 silver gelatin photos by photographer W.C. van Dijk (1905-1964), with text to accompany the photos, 2 gouaches, a lithographed pamphlet N.U.S.O. etc.