Looking for Troy Moore from the Wanatchee, Washington area.  Born
around 1921.  Still alive?  Address?  In-Law relative of family
member, requested information.

I understand that questions asking for "private information about
individuals" are not being answered on GA.

However, I came across this photo showing someone with the name of
Troy Moore (of Plain, WA):
http://www.wrh.noaa.gov/otx/outreach/news/2004/fall04san.pdf (on page 3 of 4)

Could this be the person your are trying to find?

I checked the Social Security system's Death Index, and didn't find
any obvious "candidate", but you can check.  There were only 92 Troy
Moore names.

http://ssdi.genealogy.rootsweb.com/cgi-bin/ssdi.cgi

I went off half cocked:

You can check this site for telephone numbers nationwide of Troy Moore.
There were only four listed in Washington state;  15 pages, nationwide:
http://www.whitepages.com/

I live in Washington State, you spelled - Wenatchee - wrong, that
might make a difference. You might sign up here for 30 days, it's
fairly inexpensive considering what you get, and start calling likely
relatives:

http://www.veromi.net/processor.asp