Ernest Montaut16 - Drawing. Public domain image.

This LZ2 was built sometime between 1910 and 1914. Five airships of this design operated by Delag, safely carried 35,000 passengers between German cities. This was the first passenger air service in the world.
[Mabileau & Co.], c. 1915. Hand-coloured pochoir print. Image size (including text): 13 1/2 x 31 1/4 inches. Sheet size: 17 3/4 x 35 inches.