old hugs versions?

Hello, are there any valid links in the whole internet pointing to old versions of hugs? Concretely I need hugs-1.3b and all hints how to find it would be very appreciated. One may ask what the hell I want to do with this old stuff :-). My intention is to compare its parser.y file with the one of Johan Nordlanders ohugs (http://www.cs.chalmers.se/~nordland/ohugs/). Thanks in advance, Steffen Mazanek