[2] Sponsored by the Office of the Coordinator of Inter-American Affairs, the drama series featured many of the actors from Welles's Mercury Theatre repertory ensemble.

Hello Americans was produced concurrently with Welles's other CBS series, Ceiling Unlimited, a salute to the aviation industry, and his work was considered a significant contribution to the war effort.

[3] Orson Welles produced Hello Americans under the auspices of the Office of the Coordinator of Inter-American Affairs, created by President Franklin D. Roosevelt in July 1941 "to provide for the development of commercial and cultural relations between the American Republics and thereby increasing the solidarity of this hemisphere and furthering the spirit of cooperation between the Americas in the interest of hemisphere defense.

[8]: 373 "The pan-American cause, with its inclusiveness, its celebration of diversity and its challenge to the values of white Anglo-Saxon Protestantism, was something to which Welles felt deeply attracted," explained biographer Simon Callow.

The whole idea of all these empires fighting over tiny little islands, and black independence and Spanish pride and the War of Jenkins' Ear and those great earthquakes.

[14] "Brazil" is one of four of Welles's wartime radio broadcasts included as supplementary material in the Kino Classics restoration of The Stranger (1946), released on DVD and Blu-ray Disc in October 2013.