Private helicopter innovator Frank Robinson remembered as visionary, In depth
Remembering aviators who died in 2022 - AOPA
Danger spins from the sky: The Robinson R44, the world's best-selling civilian helicopter, has a long history of deadly crashes - Los Angeles Times
Dreams take flight at Torrance exhibition of pioneering female pilots – Daily Breeze
Frank D. Robinson - Wikipedia
Frank Robinson turns a rejected idea into the world's largest maker of civilian helicopters
Frank Robinson Dead At 92 - AVweb
Frank Robinson, Baltimore Orioles Hall of Famer, dies at 83
Robinson 22 - Heli Archive