File:A City on Mars front cover.jpg

Summary
The resolution is above the usual recommended limit. However, it still has around half the megapixels of the original. The small text is quite difficult to read when the resolution is reduced so much (e.g. "Cricket Ranch" in the underground city, or the quote from Andy Weir), so having a larger version is important for accessibility (the real-life version is not difficult to read). This is only a single piece of a large work so this shouldn't affect the minimality criterion.