page 16 of "Wings Over the World: Pan American World Airways Annual Report for 1943"; centerfold map entitled "Commercial Air Transport Routes Established by Pan American Airways"
image from pp.4-5 of Classroom Clipper, Vol. 1, No. 3, Dec. 1944. Left caption reads: "This unusual map shows Central America, the Caribbean area and part of South America as it would appear to you from a vantage point in the stratosphere over Texas,…
image from page 2 of "Pan American World Airways Teacher: By Flying Clipper to the Philippines" illustrating an air route to the Philippine Islands via Hawaii, Wake Island, and Guam.
Image from page 24 of New Horizons, Vol. 14, No. 10, Oct-Dec 1944. Caption reads: "Smiling welcome from within a Clipper is a Miami pioneer, Margaret Echols"