Goodyear-Zeppelin Company TransPacific Routes for Commercial Airships - 1929

Original company 10x8" b&w photo of a large map showing proposed airship routes from Los Angeles to Tokyo and Manila. The southern route stops in Guam and Hawaii. Two-hole punched in left margin as with Goodyear files; this one is mounted on heavy linen. Dated lower right as March 4, 1929. Very good.