Frank Schelling's 1918 Hisso powered JN-4H Jenny is scheduled to attend the Air Mail Days Fly-In. One of only two flying Hisso powered Jennys, this aircraft is an award winner many times over. Since the first mail route between Washington, DC and New York City was flown by Hisso JN-4's, this plane's attendance at Air Mail Days assures authenticity for the event. Read the full press release. Photos by Mike Shreve.