ERASMUS, D. Opera omnia. Rec. et adnot. critica instr. not. illustrata. Vol. I 1-8; II 1-9; IV 1,1a-4, 7; V 1-8; VI 2-10; VII 2 & 6; IX 1-9. Amst./Leiden, 1969-2018. 51 vols. of the series. 4°. Ocl. (Some spines slightly faded).
The initiative for this critical edition was taken in Rotterdam in 1960. An international team of eminent scholars set to work, Prof. Heesakkers being one of them. Still in progress.€ 1200