Thanks, Polaris. The problem comes from the source of the names, the near-daily updates from JPL such as this one:
https://mars.nasa.gov/msl/mission-updates/8...-freezing-cold/You can see the errors you mentioned in that update. If I notice an error I change it but usually I am too busy to pay attention and I just copy and paste.
I am always pleased to have the corrections and I will add them to the map (and please everyone, keep sending them, don't think I will be offended). Ultimately, however, my map has to match what goes into the public record in the PDS Analyst's notebook. If I find, 6 months from now, that the PDS has the correct spelling I will use it, but if they have the wrong spelling I have to match them, not the official name of the place.
Phil