10 September 1913

The Post Office Department authorized mail to be flown from the fair grounds to the post office in Carmi, Illinois, on September 9 and 10, 1913, as Route No. 635,003. According to the Carmi postmaster, aviator Anthony Jannus flew a sack containing 241 pieces of mail on a single flight. Mail is known with postmarks on September 10 or 11, all with the official one-line "MAILED VIA AIRSHIP" cachet.