Taco Bell in the 1960s, 1970s & 1980s: See their old restaurants
Taco Bell - Wikipedia
Jack in the Box – Long Island 70s Kid
Taste of a decade: 1970s restaurants
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The Stories Behind Longhorn's Favorite Restaurants and Bars
Retro Junk
Vintage Taco Bell: Menus and Ads from the Good Old Days - Rare Historical Photos
Taco Bell Menu & Restaurant Design - 1960s : r/1960s
Offbeat L.A.: The Oldest Surviving Mexican Restaurants in Los Angeles
Vintage Taco Bell: Menus and Ads from the Good Old Days - Rare Historical Photos
Fast-food wars heated up in late 1960s
The original Taco Bell menu from the 1960s : r/Damnthatsinteresting