The Record of Currupira by Robert Abernathy, Science Fiction, Fantasy

MAN FROM MARS The body here preserved was found December 12, 2001, by an exploring party from the spaceship NEVADA, in the Martian city which we designate E-3. It rested in a case much like this, in a building that had evidently been the municipal museum. Around it, in other cases likewise undisturbed since a period estimated at fifty thousand years ago, were a number of Earthly artifacts. These finds prove beyond doubt that a Martian scientific expedition visited Earth before the dawn of our history.