How it started
History
In 1949, Jim and Margaret Knudson visited a friend's home for dinner. They were served tacos for the first time, and having experience in the food business, Jim thought the taco would have universal appeal, and so he developed his own taco recipe. He added his recipe to the menu of his restaurant "Jimmy's 49er Cafe" located in Grass Valley, California. In the first few years, customers were not enthusiastic about trying the menu item, but it gradually gained popularity.
In 1954, the two converted a 16-foot trailer into a mobile kitchen. A frequent customer gave Jim the nickname, "Jimboy". This inspired the two to rename the restaurant, "Jimboy's Spanish Tacos". Around the summer of 1954, the couple towed the recently converted trailer to Kings Beach, California on the north shore of Lake Tahoe. The fledgling restaurant soon became popular with celebrities like the cast of the Bonanza TV series that filmed nearby and members of the Rat Pack who were performing at casinos in the area.
From Wikipedia’s article on Jimboy's Tacos, shared under CC BY-SA 4.0.2