I have only some unbuilt kits of a German P class Zeppelin and LZ 127 Graf Zeppelin by Mark I plus Norge by Classic Airships is ordered.
Mark I has made some Zeppelins (P, Q, R class, Graf Zeppelin, British R33/34).
Classic Airships has a really large collection of British, German, Italian, and US airships and balloons in 1/1250, 1/1200, 1/700, and 1/600:
Classic Airships on Shapeways
Hendrik built a larger collection of these. Here are some:
Zeppelins L53, L56, L63, L65, and L70 (1/700, Classic Airships) by Hendrik Schütte