1585
1565
1561
1545
Is dated 1949 in Constant's archives however the date of origin for this work varies amongst different sources.
1424
1407
1406
'Gregor' voor Cora op haar verjaardag 19-06-'86 ('Gregor' for Cora on her birthday, 06-19-1986)
1403
The numbering is for practical reasons to distinguish between different works with the same title.
1382
1354