Rivers and roads are next. Again, we can use our geodata to place them. The lines in the original map seem to be mere approximations; the actual road network is slightly different, and I can't find the north-eastern river in my river system data. (Or perhaps the roads have changed and the river dried up in the last century. Hard to say.) At any rate, the roads and rivers shown on the original map are:
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We will want to smooth them out. At this point, we have to slightly change the north-eastern road; in actuality, it seems to be a coastal road, but it has to be drawn a little bit inland (or it'lll overlap the coast).
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We add back in the mountains and change the line widths to match the original map:
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