norconet

This may be the wrong place to ask this..........but here goes. My name is Steve Smith and I wrote a program for the Atari 8-bit computer called "Bumper Pool". The program was published and sold by Atari Program Exchange (APX). I am now trying to find out where I can acquire a copy of the original software release APX Catalog Number 20053. Please point me in the right direction to find sources. Thanks to anyone who can help. Steve Smith