Maison d'Artiste; color design for facadeResidential house P. Groutars-Scholte; first floor plan in perspectiveVacation home De Vonk in Noordwijkerhout; design for entrance and hallway floorMaison d'Artiste; color design for facadeMonogram; design for J.J.P. OudComposition: color designComposition; sketchComposition; studyComposition; studyTypography for Hagemeyer & Co Exporters; design for a checkout signTesseracts; sketches of thirteen tesseractsApartment A. Horn in Strasbourg; design for a composition in stained glassAgricultural winter school in Drachten; design for stained glass window 'Great Pastoral' and 'Little Pastoral'; the spitterTesseractApartment A. Horn in Strasbourg; three designs for a three-part stained glass windowApartment A. Horn in Strasbourg; design for a stained-glass windowThird Craft School Timorplein in Amsterdam; stained glass composition XIII; color design for the stained glass windowThird Craft School Timorplein in Amsterdam; stained glass composition XIII; color design for the stained glass window