From the first airborne letter, written by George Washington and carried aboard a balloon from Philadelphia in 1793,to the complex network of air mail services we take for granted today, here is the complete story of the tremendous achievements of air mail entrepreneurs and aviators.
I really expected more photos from an illustrated history. The timeline layout was a bit clunky in terms of readability. Near the end there was a lot of backtracking and jumping around to cover developments in other countries.