Decca Records rejected The Beatles after an audition on January 1, 1962.
Milton Bradley and Parker Brothers rejected Monopoly. (Parker Brothers later bought the game after learning of high sales.)
Jack Canfield’s Chicken Soup for the Soul was rejected 144 times.
“If we had given up after 100 publishers, I likely would not be where I am now. I encourage you to reject rejection. If someone says no, just say NEXT!”
– Jack Canfield
https://en.wikipedia.org/wiki/The_Beatles%27_Decca_audition
https://en.wikipedia.org/wiki/History_of_the_board_game_Monopoly