1 memorial stone, 1960
100 principle drawing with request for proposal, 1958
220 overview excavation, 1959 (work number 5803)
221 cross-sections for earthwork, 1959 (work number 5803)
222 mock up, 1960
223 situation and course of sheet piling, drainage and fences, 1960
z.nr. south elevation
s.nr. work site layout, 1959 (work number 5803)
(work number 5803 = Maaskant, de Vlaming & Salm)