Paul J Heald writes: The vast majority of books and songs from the 20th Century are out-of-print. New data show music publishers doing an admirable job of digitizing older content, but book publishers fail miserably at putting old works in eBook form. New research by Paul Heald explains why.
"The Mets were great in 'sixty eight,
The Cards were fine in 'sixty nine,
But the Cubs will be heavenly in nineteen and seventy."
-- Ernie Banks