1943. Plot summaries of the great operas, as compiled for the International Cyclopedia of Music and Musicians. Composers include Auber, Balfe, Berlioz, Bizet, Charpentier, Cimarosa, Donizetti, Flotow, Gluck, Granados, Verdi, Rossini, Wagner. Operas include Martha, Pelleas, and Melisande, Cyrano de Bergerac, Hansel und Gretel, The Emperor Jones, Carmen, Otello, Don Giovanni, the ring cycle.
Many years ago, I found this epic (but tiny) tome in some obscure bookshop and put it on a shelf with a dozen or so Penguin pocket editions in our guest bathroom.
One night, we were having a game night, and Todd, one of our guests, excused himself to the bathroom. The games went on, but eventually, Todd's plus-one realized he had been missing for quite a while. A brief search found him seated on the edge of the bathtub, reading this book.
"I couldn't put it down!" he said, proclaiming this to be the best bathroom book he had ever found.
Of course, another friend scoffed that it was just a "book of spoilers" - so, you know... to each his own.