A "short snorter" is a banknote signed by various persons meeting together or made to commemorate a special event (solo flight, trans-oceanic flight, trip crossing equator orinternational dateline, etc.). The tradition started sometime shortly after WW I and spread with the barnstormers, bush pilots in Alaska in the 1920's, and balloonists. ThePan American Airlines "Clippers" which flew from the mainland of the US to Hawaii, South America, and points beyond hastened the spread of the tradition which then grewexponentially during World War II.

A short snorter can also be a long chain of snorter notes connected by tape or staples (above image). Sometimes multiple notes from various countries would be taped together sothat the holder of the notes had a record of where they have been and who they met. A "Short Snorter" is an individual who has become a member of the short snorter tradition. Ifyou signed a short snorter and that person could not produce it later upon request, they owed you a dollar or a drink, a "short snort" (because aviation and alcohol do notmix!), thus the name "Short Snorter". It was common for very important people (VIPs) to autograph short snorters during USO trips in WW II.

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What is a "short snorter?"(https://papermoneymessages.com/knowledge#cb6368a8-73ba-42f5-a1fd-11818d0c58ca)