I've search the net for info about N.28 of
Edward Rickenbacker.
From what I get on 94th Aero Squadron (Pursuit), am I right to assume that Rickenbacker flew N6159 Nieuport 28 from Toul, Gengoult Aerodrome, between March and May 1918?
That's the famous plane with two Liberty Lawn Posters:
http://www.airminded.net/n28/N28_94th_12b.jpg
http://www.wwiaviation.com/popup/Nie...kenbacker.html
Notice on the first link, there is no serial number visible on the white part of the rudder.