Colorful 22"wx28"h poster by artisit Wittlig, ca. 1930 on heavy card stock. Shows a globe with air routes throughout the US, Central and South America and Asia. Central flying boat has Pan American logo and is flanked by a Beech D-18 and what appears to be a DC-3. On heavy card stock, generally G-VG, small margin stains and corner thumbtack holes. Some surface wrinkling when viewed close and oblique. I have never seen this poster before; a great centerpiece for an airline or airmail collector. Quite rare.