Harold Prince, the consummate Broadway producer and director who died on Wednesday at the age of 91, had his first Broadway credit in April 1950, as an assistant stage manager for “Tickets, Please!” Four years later, his first foray into producing, “The Pajama Game,” was a huge success, garnering the first of his 21 Tony Awards. Prince went on to have an astonishing career, which the playbills below can only suggest. Click on any cover to see it enlarged, and read the title of the show, its run (which range from 31 years and counting for “The Phantom of the Opera” to three days for “Play Memory”), and how Hal Prince was involved.