Hi,
I've found this site to be a great resource while lurking over the last few years and the recent thread about Gmap4 made me want to get off my butt and introduce myself.
In my no longer so copious spare time I've created my own online topographic map of the Sierra Nevada (specifically focused on the peaks of the Sierra Peaks Section peak list) which, of course, includes Yosemite. Hopefully members of this community will find it useful. You can find it here:
http://www.closedcontour.com
I've also started work on a large wall map of Yosemite. It's a 1:63360 map of the whole park, measures 52"x42" (big!), and hopefully one day will contain up-to-date information of use to backcountry users. Not having the free time I once had there is no ETA for ever finishing this map but it's been quite fun to work on. Here's a poorly downsampled image of what it looks like from afar:
Actually I have a copy on my wall and the colors of the roads/rivers/lakes etc are much more subdued than the above image. Anyway, here's an area with a little more detail:
So far I've got all the named summits, lakes, passes, some trails, some canyons, and a few other odds and ends on there.
I'd also be curious to have some of the more prolific backcountry visitors in this forum try out using a for-print re-rendering of the closedcontour.com maps out in the wilds to get some feedback. Here's an example map made to be printed at 240dpi. Any takers?
Thanks,
Dan