Comparison of Schiaparelli's 1889 map (File:PSM V35 D060 Schiaparelli map of mars.jpg) with a satellite map of Mars (File:Mars Géolocalisation.jpg). To me, it appears that Gale Crater lies directly on the Cyclops canal, near its junction with Cerberus, Antarus, Eunostos, and some other (Galaxias or Pactolus), a location known as Pambotis Lacus (Cerulli) as "admirably seen by Brown and Molesworth".[1] Apart from Eunostos, which appears misplaced, these features in the area generally seem like they're believable (hallucinatable?) from the actual map, including the various divisions of Cyclops. Since Cyclops, as I understand it, divides Aeolis from Aethiopis, that would imply that Aeolis Mons is not in Aeolis! Unless, that is, astronomers at some point came up with an arbitrary definition like they did for constellations, which would be all too sane. :)
License of the Schiaparelli map is PD-old; license of the NASA part is PD-NASA.
The NASA website hosts a large number of images from the Soviet/Russian space agency, and other non-American space agencies. These are not necessarily in the public domain.
The SOHO (ESA & NASA) joint project implies that all materials created by its probe are copyrighted and require permission for commercial non-educational use. [3]