On Trailheads and Maps

I was wondering if there is a list of trailheads to the Greenway trails. I, in various places, have some GPS coordinates, addresses and/or general descriptions of about 7 trailheads. If anyone were interested, and if someone hasn't already done it, I could produce such a list. Another idea would be to produce a map that showed a detailed graphic of each of the trailheads. Also, although the Greenway proper may not be interested, I have spent some time mapping the area between the greenway and Little Boston Road. I know several people who hike these trails and if anyone reading this would like a beta copy of my map let me know and I can send a JPEG copy. (It might require a little cleaning up before I can scan and send it, but I will if anyone is interested.)