Here you find the dates, when the catapultflight and the feedeflights
The dates are those taht are announced by the Reichs Post Ministerium.
If a date has a link, and you activate it, you wil see the special cachet, that belong to that flight,
informations about the flight
and informations about registered and special delevery mail.
Information about the flights are from
Grosser Deutscher Schleuderflugpost-Katalog