I came across a site (
http://www.flightsim.com/arcanum), where Nels Anderson, the author of a few of the programs I've listed, appears to be selling his software. The site seems to be old, and there is no indication that it has been updated for some time. I have initiated contact with him via email to determine the abandonware status of his games.
Until then, the following programs are retracted from the list:
Mahjongg
Mahjongg - Dragon's Bane
EGATrek (already uploaded)
Super Fly (already uploaded)