Version 0.7.28:
ftp://ftp.metacom.ru/pub/software/terrage...tall_0_7_28.zip
Version 0.7.22: link down
http://www.terragen.de/download/tginstall_0_7_22.zip
Version 0.6.63: link down
http://www.terragen.de/download/tginstall_0_6_63.zip
Also look at this website:
http://jamesrskemp.tripod.com/jms3terversi...sionhistory.htm
This guy says that if you email him he'll send you old versions.