d278 - 1917-1918
	- ca. 1917 Ikonography Prof. Ligtenberg
	- 1947
	- 1947-1948
	- 1948-1950
d279 - nov 1953 / 8-6-1956
	- 11-2-1954 / 2-4-1955
	- 17-6-1956 / 8-3-1957
	- 1956
d280 - 8-3-1957 / 23-3-1957
	- 23-3-1957 / 16-6-1957
	- as of 20-6-1957
	- 8-8-1957 / 10-8-1957
	- 17-9-1957 / 22-1-1961
	- 9-2-1959 / 20-2-1960 (Rome)
d281 - 10-1-1969 / 31-5-1971, no.1
	- 13-9-1966 / 9-6-1968, no. 1A
	- 9-6-1971 / 6-4-1973, no.2
	- 6-4-1973 / 27-7-1973, no. 3
	- 37-7-1973 / 8-3-1974, no. 4
	- 13-3-1974 / 15-1-1975, no. 5
d282 - notebook as of 7-6-1972
d283 - 18-1-1975 / 15-3-1975, no. 6
	- 17-3-1975 / 27-6-1975, no. 7
	- 27-6-1975 / 17-11-1975, no. 8
	- 23-11-1975 / 17-8-1976, no. 9
	- 18-8-1976 / 3-1-1977, no. 10
	- as of 2-5-1978