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93. Alaska Arctic Air Mercy Flight
Unknown 92 Back to UPO Home Unknown 94
| This was said to have been issued for an emergency flight of diphtheria serum to Nome, Alaska, but the serum was carried by dog sled instead. How many colors are there to this set? |
| According to the new book "Triangular Philatelics" by Chris Green there are ten color combinations. These exist on white paper, yellow paper, silver border (as shown), and gold border. [Rick Scott] |