Americabymotorcyclebook.com
The 1918 Salmson 2A2 by thegreatlandoni on Flickr.
A WWI Aeroplane … An American-Built DH-4 by thegreatlandoni on Flickr.
WW1 era motorcycles by Martin Hronský on Flickr.
de Havilland DH.98 FB Mk VI and Ariel motorcycles by kitchener.lord on Flickr.
1917  November  -  WWI  -  The  Duesenberg in a ‘Biddle Automobile  ~ Duesenberg Automobile Engines - Deusenberg Motors Corporation New York City by carlylehold on Flickr.
North American F-82 by kitchener.lord on Flickr.
  by nelnov on Flickr.

by nelnov on Flickr.

Navy dirigible, Long Island by amphalon on Flickr.