The Air Mail History of the Canal Zone and Panama, 1918-1941 (2 Volumes) by Capt. Julius Grigore, Jr. (2011)

 

 

Air mail history offers a great perspective into not just aviation’s past, but the geopolitics that shaped our world.

Volume I of II, available in hardcover, paperback and Kindle (2014). (**)

https://www.amazon.com/Mail-History-Canal-Panama-1918-1941-ebook/dp/B00R0DPVM2/

 

Volume II of II, available in hardcover.

https://www.amazon.com/Mail-History-Canal-Panama-1918-1941/dp/1468000136/