[comp.sys.mac.hypercard] Info wanted on Heizer or other stackware outlets

DATJN@NEUVM1.Bitnet (Jakob Nielsen Tech Univ of Denmark) (04/28/88)

I have a problem with electronic publishing: How do I make sure that
there is a place where people can buy my stack if they want it.
In one case, I have  a  stack uploaded to Info-Mac, but many people
told me that they have problems downloading (and it is 500 K, so
transmission time may also be a problem for some people).

This stack is not a commercial product but more in the nature of a
Technical Report. I have read some allusions to a Heizer software
stack exchange. Can anybody send me more info on how to contact them
(e.g. address, email, etc.) and whether this or some other option would
be suited for my purpose.