https://www.military.com/history/howard-hughes-behemoth-world-war-ii-era-spruce-goose-turns-75-2022.html
Military.com
The H-4 Hercules “Spruce Goose” built by Howard Hughes during World War II. (National Archives)
The H-4 Hercules “Spruce Goose” built by Howard Hughes during World War II. (National Archives)
https://www.military.com/history/howard-hughes-behemoth-world-war-ii-era-spruce-goose-turns-75-2022.html