The image with the map is actually from the Planet of the Apes TV series, which had a different continuity than the film series.
The TV series was set in California instead of New York. For example, at one point, the astronauts encounter the ruins of a BART (Bay Area Rapid Transit) station.
Ah. That explains it, then. I love the movies, but I've never watched the TV series. Should I?
If you love the original movies, then by all means check out the TV series. There are only 14 episodes, so it's not a big time investment.
There was also "Return to the Planet of the Apes", an animated series from 1975. The animation isn't great, but the writing is excellent. Furthermore, the series (if you watch the episodes in the proper order) has an unheard of level of serialization for a TV series made in 1975. The animated series had only 13 episodes (unfortunately), so that's not a big time investment either.