Richard and Maurice McDonald (English Wikipedia)

Brancaccio, David (February 9, 2017). "The true origin story behind McDonald's". Marketplace. Archived from the original on September 7, 2023. Retrieved September 7, 2023.
Gilpin, Kenneth N. (July 16, 1998). "Richard McDonald, 89, Fast-Food Revolutionary". The New York Times. ISSN 0362-4331. Archived from the original on September 21, 2021. Retrieved July 25, 2023.

bbc.co.uk

"Fast food supremo dies" Archived 2022-01-31 at the Wayback Machine July 15, 1998. BBC News. Accessed January 6, 2007.

"La reina de la cocina (rápida) cumple 100 años". El Mundo (in Spanish). May 30, 2004. Archived from the original on February 12, 2005. Retrieved May 28, 2021.

"Ray Kroc: Burger Baron". Entrepreneur. October 9, 2008. Retrieved May 29, 2019.

Muldoon, John P. (May 28, 2013). "From Immigration to Mega-Wealth". johnmuldoon.ie. Archived from the original on September 18, 2013. Retrieved July 12, 2021.

Brancaccio, David (February 9, 2017). "The true origin story behind McDonald's". Marketplace. Archived from the original on September 7, 2023. Retrieved September 7, 2023.

Stice, Joel (March 15, 2019). "The Tragic Real-Life Story Of The McDonald Brothers". Mashed. Archived from the original on May 30, 2020. Retrieved May 26, 2021.

Gilpin, Kenneth N. (July 16, 1998). "Richard McDonald, 89, Fast-Food Revolutionary". The New York Times. Retrieved June 5, 2017.
Gilpin, Kenneth N. (July 16, 1998). "Richard McDonald, 89, Fast-Food Revolutionary". The New York Times. ISSN 0362-4331. Archived from the original on September 21, 2021. Retrieved July 25, 2023.
Anderson Heller, Susan; Dunlap, David W. (November 21, 1984). "50 Billion and Still Cooking". The New York Times. p. B3. Retrieved May 28, 2021.
"Maurice J. McDonald Dies at 69; Hamburger Chain's Co Founder". The New York Times. December 14, 1971. Archived from the original on August 12, 2017. Retrieved May 26, 2021.
Gilpin, Kenneth N. (July 16, 1998). "Richard McDonald, 89, Fast-Food Revolutionary". The New York Times. ISSN 0362-4331. Retrieved October 21, 2017.
Itzkoff, Dave (January 18, 2017). "'The Founder': Burgers, Fries and a Couple of Wiseguys". The New York Times. Archived from the original on January 18, 2017. Retrieved May 26, 2021.

Muldoon, John P. (May 28, 2013). "From Immigration to Mega-Wealth". johnmuldoon.ie. Archived from the original on September 18, 2013. Retrieved July 12, 2021.
"Original McDonald's Site & Museum". California Route 66 Association. Archived from the original on June 12, 2020. Retrieved June 12, 2020.
"La reina de la cocina (rápida) cumple 100 años". El Mundo (in Spanish). May 30, 2004. Archived from the original on February 12, 2005. Retrieved May 28, 2021.
Stice, Joel (March 15, 2019). "The Tragic Real-Life Story Of The McDonald Brothers". Mashed. Archived from the original on May 30, 2020. Retrieved May 26, 2021.
"Maurice J. McDonald Dies at 69; Hamburger Chain's Co Founder". The New York Times. December 14, 1971. Archived from the original on August 12, 2017. Retrieved May 26, 2021.
"Fast food supremo dies" Archived 2022-01-31 at the Wayback Machine July 15, 1998. BBC News. Accessed January 6, 2007.
Eschner, Kat (February 16, 2017). "Nick Offerman's Character in 'The Founder' Is Based on This Real Historical Figure". Smithsonian Magazine. Archived from the original on February 17, 2017. Retrieved May 26, 2021.
Itzkoff, Dave (January 18, 2017). "'The Founder': Burgers, Fries and a Couple of Wiseguys". The New York Times. Archived from the original on January 18, 2017. Retrieved May 26, 2021.

Gilpin, Kenneth N. (July 16, 1998). "Richard McDonald, 89, Fast-Food Revolutionary". The New York Times. ISSN 0362-4331. Archived from the original on September 21, 2021. Retrieved July 25, 2023.
Gilpin, Kenneth N. (July 16, 1998). "Richard McDonald, 89, Fast-Food Revolutionary". The New York Times. ISSN 0362-4331. Retrieved October 21, 2017.