Chocolate bar introductions by year

[1900] Hershey bar
[1907] Hershey Kisses
[1908] Hershey bars with almonds
[1919] Nestle Milk Chocolate Bar
[1920] Baby Ruth & Oh Henry!
[1922] Charleston Chew, Clark Bars
[1923] Reese's Peanut Butter Cups, Mounds
[1925] Mr. Goodbar
[1926] Milk Duds
[1928] Reese's Peanut Butter Cups, Butterfinger & Heath bar
[1929] Snickers
[1932] 3 Musketeers
[1935] Kit Kat bar
[1936] Fifth Avenue
[1937] Rolo, Smarties
[1941] M&Ms
[1947] Almond Joy
[1949] Junior Mints
[1954] Peanut M&Ms
[1966] $100,000 Bar
[1977] Twix Cookie Bar
[1978] Reese's Pieces