I accuracy here probably isn't extremely high. I took a regular Mars topomap and erased the features that weren't supposed to exist yet. The cratering is probably quite inaccurate. I do have a much higher resolution version of this image which I used to make this: [link] image. If you really want it I'm sure I can get it to you some how, but I don't want you distributing it.
I hope I'm not bothering you with these recent comments, but I have one quibble about this map. More of a question really.
When I did my own Mars maps, I left large parts of the Tharsis Bulge bare of vegetation and snow/ice, a lot like your other Mars map. Is it even possible for snow to fall at such high altitude and thin air? I honestly don't know, so I guessed no.
The altitudes weren't as high back then. Most of the very high mountains had yet to form. Additionally I think that Valles Marineris, which formed during the end of this period, is strong evidence of a giant glacier covering the Tharsis region. This page is where I got most of my data: [link]