> Darryl Brock's MARK TWAIN AND THE GREAT BASEBALL GAME (1999). Issued in a
> small edition of 150 copies in wrappers. I don't see any listed online, so
> it may be hard to find now.   Includes a vivid account of the 1875 game
> attended by Twain and Joe Twichell, with text of the amusing newspaper ad
> Twain ran after he lost his umbrella.

  This fine article originally appeared in 1994 in The National Pastime, an
annual publication of the Society for American Baseball Research. (It may
have been revised or expanded for the later publication, which I've never
seen.) SABR often has back issues available, relatively inexpensive,
so you could check the web site and see about getting it that way.

Bob G.