There are very few theatrical productions that both recount the change of history and make that recount a change in itself. "Angels in America: A Gay Fantasia on National Themes" by Tony Kushner is one such production. Appearing in the mid-1980's and continuing to this day, Kushner's play(s) give the AIDS epidemic a "face" by showing different bits of society who were affected by disease. By having a cast which included such characters as Roy Cohn and Ethel Rosenberg being surrounded by unknown people who carry the play's plot (to the extent there is a plot.) I never saw the plays at theaters but did see the wonderful HBO production in 2003 and read Tony Kushner's revised edition of the play, published in 2014.
Isaac Butler's new book, "The World Only Spins Forward: The Ascent of Angels in America" is the story, basically, of the play's productions going forward from 1985. He interviews many of the cast members, production people, and those involved in the writing, direction, and finances of the play. The author, of course, is Tony Kushner, whose almost feverish writing and rewriting of the play was continuous over the first few years. Kushner combined the politics of AIDS with the personal of gay identity. He includes religious identity; several of the main characters were Mormon. (Hhhm, I wonder if the idea of "The Book of Mormon" came in part from "Angels"?)
"Angels in America" was produced on stages from London to Los Angeles and played for many years in New York. The play began in San Francisco, produced at the Eureka Theater, a small local theater. Oskar Eustis was the producer and he and Kushner worked together with their actors and stage crews to put on the first production. But the play, as Kushner kept writing, was so long that it was eventually broken up into two plays. Who had the stamina to star in two plays? The mostly young cast who entertained the rapturous audiences who had the stamina to sit for hours! From San Francisco, the play headed to Los Angeles, and then on into the wider world.
Bishop's book is written in chapters which are short interviews with various cast and crew. I really don't care for this form of non-fiction, but the subject was so well covered that the writing style didn't bother me. I mention this only because some readers don't like this style.