United airlines
by Pauline ProehlUSA
1940
Pictorial map of the United States showing United air lines and connecting air lines.
Includes scale bar indicating "scale of flying hours.”
P.h.D.research by Kiara M Firpi Carrión
othercartographies@gmail.com
LinkedIn + Instagram
Last Updated:
13th of September, 2019 All Rights Reserved
othercartographies@gmail.com
LinkedIn + Instagram
Last Updated:
13th of September, 2019 All Rights Reserved