The geniuses at University College London have made available--for free--a glorious map of the moon, as illustrated by astronomer Walter Goodacre in 1920. Words cannot describe how incredible this map is, so I'll just show you (click to embiggen):
That's a resized version (by me, so I could fit it here, but also messed up the clarity) of one page of his original publication. Go now to the UCL site and feast your eyes on full-size scans of the pages! You can also peek at these on Flickr in a slightly more approachable format.
And that's not all! They've digitally stiched the entire map back together into a clean, line drawn version that you can download--in either 130mb and 300mb versions.
The thought of printing this out and spreading it onto a table to use as a wilderness adventure or a lunar wargaming map is almost geographically obscene. My GM-brain is salivating at the mere notion of a Victorian-age steampunk/dieselpunk campaign, tromping through the wilds of the moon!