Author J.K. Rowling has told the story of how she received "loads" of rejections before "Harry Potter and the Philosopher's Stone" (known in the U.S. as "Harry Potter and the Sorcerer's Stone") was finally published on June 26, 1997.
Rowling once told fans that she couldn't even get books published under the pseudonym of Robert Galbraith, which she used for some thrillers she wrote.
@jk_rowling how many no's did you get before you finally got published?
J.K. Rowling ✔ @jk_rowling
.@babymegs_ Loads! First publisher to turn down Harry also sent @RGalbraith his rudest rejection. They don't even want me in a beard.
But, as wizards everywhere now know, Rowling and her imagination eventually broke through in a major way.