These don't come up very often but there is a boxed copy of Pathways Into Darkness for sale on eBay. Judging from the box it is the later 1994 release containing version 2.0.
Has all the contents except... and it's a big except... the manual. Which makes it pretty useless since even if you could install it you wouldn't get past the copy protection. :(
You can buy it now for US $42.99.