Many of the people who work on Broadway keep scrapbooks of their experiences: photos, signed posters, ticket stubs, and, of course the Playbills. Playbill Books, a division of the iconic 127-year-old company that designs the programs for every show on Broadway, has expanded this idea into an annual project that has become a Broadway institution: The Playbill Broadway Yearbook. Taking the form of a college yearbook, the seventh edition...