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"World Map of the 18-Orbit Mercury Missions" Lot of 2 different, 30x22" black and white maps of the

Currency:USD Category:Everything Else / Other Start Price:NA Estimated At:100.00 - 150.00 USD
 World Map of the 18-Orbit Mercury Missions  Lot of 2 different, 30x22  black and white maps of the
"World Map of the 18-Orbit Mercury Missions" Lot of 2 different, 30x22" black and white maps of the earth showing orbits 1-9 on one and orbits 10-18 on the other as well as the worldwide telemetry stations covered by each orbit. Each chart is marked "20Sept 1961" in the lower right hand corner. These are very interersting charts in that there appeears to be no "18 Orbit Mercury Flight" recorded. MA-4 was a one-orbit flight (13 September 1961) and MA-9 was a 22-orbit flight. Perhaps this was a training projectshould the mission have to be aborted prior to its completion. A little mystery adds interest to these attractive charts. A vertical centerfold and minor edge faults should not detract. Ex: the Milton Weiss Estate collection.