Mark Pearson was an engineer in General Electric's Missal and Space Division. There was discussion on naming the Apollo XI landing site. In the accompanying copy of his letter, he suggests the name El Dorado from a poem by Edgar Allen Poe which he cites: "Over the Mountains of the Moon, down the Valley of the Shadow, Ride Boldly ride, the Shade Replied, if you seek for El Dorado!" Neil Armstrong replies thanking him about the naming of the lunar site. As far back as Apollo VIII, when James Lovell became the first astronaut to encircle the Moon, they gave one the name "Mount Marilyn" but their names were disregarded for various political reasons. Still a very nice signature of Commander Neil Armstrong just weeks before the launch that would take the crew to the Moon.