License Airport
Millersburg Airport, operated by Marion Gilbert, has been licensed by the State Aeronautics Commission, for passenger carrying, without school instruction, and was also granted a qualification and safety certificate. The commission granted the Sunbury Flying Club a commercial license including school instruction.
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From the Harrisburg Telegraph, 16 April 1930, via Newspapers.com.
Note: This airport was officially dedicated as Robinson Field on 12th and 13th July 1930.
Corrections and additional information should be added as comments to this post.