> What was the legal status of Clemens' pseudonym in his
> day? Was "Mark Twain" considered a legal identity for
> SLC? Were there any laws which would have prevented
> some usurper from appropriating the "Mark Twain"
> moniker for his own works?

"He took fantastically elaborate precautions to prevent piracy of his own
work and even had the name "Mark Twain" registered as a trade-mark in
the hope of protecting his by-line after expiration of book copyrights."

Meltzer, Milton.  _Mark Twain Himself_.  New York, Avenel, N.J.:  Wings
Books, 1993. p. 152, col. 1.

This book, BTW, is a reprint of the 1960 edition published by Bonanza
Books.

Bob Sutton