The story behind red M&M's - Marketplace
The distribution of colors for plain M&M candies - The DO Loop
History of the M&M: How each amazing color came to be
Happy Birthday, M&M's: A brief history of the N.J. candy
Time line of M&M colors : r/dataisbeautiful
M&M's - Wikipedia
The Best Milk Chocolate Candy in the World for Over 75 Years: Why M&Ms Became Popular, by John Brice Witherow
History of the M&M: How each amazing color came to be
The Colorful History of M&M's Candy - DangerMan Media by Lars Hindsley
The Reason Why There Isn't a Purple M&M
M&M's Characters, Chocolate Wiki
M&M'S About Us, M&M'S
Peanut M&M's Used To Look Way Different