A Google search turned up his ebay store:
http://stores.ebay.com/Herb-Deeks-Retro_W0QQcolZ2QQdirZ1QQfsubZQ2d999QQftidZ2QQtZkm
And an Internet Modeler review of one of his items, dated August of this year (http://www.internetmodeler.com/2008/august/new-releases/herbdeeks.php), included his address:
Herb Deeks Models
1516 E. Santa Ana Street
Anaheim, CA 92805
Include a stamped, self-addressed envelope for his latest price list.
Remember, Google is your friend.
Michael McMurtrey
IPMS-USA #1746
Carrollton, TX