Thanks Hill. I found a table on the website, which I then spent several days trying to convert into a readable format for GE! Should have taken about fifteen minutes, but I had lots of trouble with the format of CSV files, and eventually resorted to all sorts of tricks. Probably would have taken less time just to type them in, but now I know the routine for next time...

After I had all the placemarks, I went from location to location, adding overlays as appropriate and trying to fit them to the terrain. The overlays really help identify what was where in the tundra.