There are several pages on the current copy of the site that have “newer” versions available via the Internet Archive: https://web.archive.org/web/20030415121156/http://members.aol.com/NewtsPrism/products.html https://web.archive.org/web/19991012080346/http://homestead.dejanews.com/user.prism2/downloads.html https://web.archive.org/web/19991010222732/http://homestead.dejanews.com/user.NewtsPrism/downloads.html https://web.archive.org/web/20030410110530/http://members.aol.com/newtsprism/MathLib/MathLib.html
There are several pages on the current copy of the site that have “newer” versions available via the Internet Archive:
https://web.archive.org/web/20030415121156/http://members.aol.com/NewtsPrism/products.html
https://web.archive.org/web/19991012080346/http://homestead.dejanews.com/user.prism2/downloads.html
https://web.archive.org/web/19991010222732/http://homestead.dejanews.com/user.NewtsPrism/downloads.html
https://web.archive.org/web/20030410110530/http://members.aol.com/newtsprism/MathLib/MathLib.html