Sugar also edited one of my favorite books,
Souvenir Programs of Five Great World Series (Dover, 1980). It reprints five World Series programs (1914, 1917, 1919, 1926, 1934) along with commentary on each Series. Perhaps the most notable inclusions are the 1919 Reds program (taken from an Opie reprint), and the 1926 Cardinals program (which is the only one of the five programs that are NOT available as reprints in the Opie collection; Opie reprinted the Yankees program from that Series).
As I write this, used copies are available on Amazon for as little as $4.72 plus shipping. Great book if you're into World Series programs but don't like having to worry about handling expensive, fragile originals.