During the course of the war the Wehrmacht utilised a great
number of chassis to mount anti-tank guns on. The earliest
was a 4.7 cm PaK(t) 36 Panzerjäger Sd.Kfz. 101 designed and
produced by Alkett
and shown to Adolf Hitler, in February 1940 this vehicle remained
in service until 1943 when it became obsolete due to the ever
increasing armour thickness of enemy tanks.
German Military Vehicles.
Armoured Fighting Vehicles of Germany World War II.
Encyclopedia of German Tanks of World Two.
For a complete list of sources