Hey there,

Not sure. I know he made something called "Droomboek", which translated from dutch means "Dreambook", but I never managed to find it. Van Eeden was a bit of everything, a scientist, an psychiater, a writer and even a poët. Some of his poëtry is actually quite famous in the Netherlands/Germany/Belgium. I learned about him when I was a child at school and knew him as a poët, so I was quite surprised to find out later that Van Eeden had written about lucid dreams as well.

But I think not all of his works were published. He died before his time (If memory serves me correct he suffered due to some depression or wasting disease later in life).

-Redrivertears-