Pictured: Ballet rehearsals, New York City, ca. 1916. From the Library of Congress. If you're head over heels for the ballet, we've got some good news: The New York City Ballet announced last week that they would be hosting two open dress rehearsals of Susan Stroman's Double Feature this month. The company began the open rehearsals last year with Peter Martins's Romeo + Juliet, and they hope to continue them annually. The press release......