Check the photos carefully - in most of them, the underwing ribs
are essentially invisible. A quick check of my reference photos
show the Fokker Dr-I and D-7, the Sopwith Tripe, the Brandenburg
C.I, the Phonix D.IIa, and the Albatros D.II all have underwing
ribs which aren't readily apparent in the photos.
Cheers, Bill
--"Just another road kill on the information superhighway."
Bill Shatzer - bshatzer@ednet1.osl.or.gov - aw177@Freenet.carleton.CA