Oooo I hate that site. There's been a lot of talk on the PNW thread on RM about him - - putting everything behind membership/passwords.

This is another site:
http://www.ridegalbraith.com
. . . but their map is a little bit incomplete:
http://www.ridegalbraith.com/RideGalbraithMap.pdf

Trillium I think commissioned the aerial/map that's at the Galbraith Mtn. Rd. trailhead kiosk. Gonna have to ask my son to write it down. The mapping co. or the Trillium might have it available on their website for free.