[Nadia]

Pun intended? Anyway those look great for reference!(If you speak German I mean!)

... answer to all important questions is known to be 42.*
... using Babel Fish * :

Die Me 209 war eine Weiterentwicklung der Me 109 und wurde
international bekannt durch den Weltreckordflug van Flugkapitdn
Wendel im Jahre 1939 mit 755km/h - damals darabsolute Rekord
fur luftschraubengetriebene Flugzeuge und bis heute noch nicht
uberboten.

The ME 209 was an advancement of the ME 109 and became internationally
admits by the Weltreckordflug van Flugkapitdn spiral in the year 1939 with
755km/h - at that time absolute record for propeller-driven airplanes and
to be uberboten today yet.

So, 'uberboten' remains untranslated due to absence of ".." on the u; further
internet search translates it as "outdone".
Today must be "way before 1966" due to the leaflet been printed long before it was sent to me ...
:roll:

PS: ... my uncontrollable desire to learn more about airplanes made me learn
English which I started to do by deciphering Air Progress magazine may-June 1966
that announced the arrival of Mig-21 in Vietnam; at that time all that I knew was from
school , Bug's Bunny and Star Trek, the latter of which I understood about nothing... :lol:

* reference: "Hitchhiker's Guide to the Galaxy"