Having been raised by a San Francisco, I loved this bit from a court case in 1918.
COURT OBJECTS TO WORD ‘FRISCO.
Judge Mogan Rebukes Angeleno for Using Slang in His Petition for Divorce.
Because he referred to this city as “Frisco” on four occasions while testifying before Judge Mogan yesterday in his petition for a divorce, Hal R. Hobbs, Los Angeles automobile dealer, was threatened with internment.
“What do you mean by ‘Frisco’?” asked Judge Mogan.
“Why, San Francisco, of course,” said Hobbs in surprise.
“No one refers to San Francisco by that title except people from Los Angeles,” said the court. “I am the chairman of the County Council of Defense, and I warn you that you stand in danger of being interned as an alien enemy. Don’t do it again.”