Dear Colleagues -

I need help tracking down a quotation - I've combed through Twain's
correspondence, critical books on Twain, and various biographical sources
but I can't for the life of me find the source of the following
(paraphrased) quotation which I came across a number of months ago.
Perhaps it was right in front of me, but....

In the
1890s (?) Mark Twain was complaining to, perhaps, some magazine editor
(?) or publisher in a letter (probably) that Charles Dudley Warner wasn't
worth much money. He said something like "I am worth two of
him" or "I am twice as valuable as he is" or some
version of that thought.

I am trying to write about _The Gilded Age_ and I am interested in Twain
and Warner's relationship after their novel ended.

My sloppy scholarship shames me and this is really just a cry for help. I'm
certain Twain said it. But to whom? What was the context? and when? Is there
an electronic site I'm not aware
of that could do an automatic search of the text of his life's writings?
(I'm dreaming, I bet.)

I'm not too proud to beg for help.

Humbly,
Susanna Ashton
Clemson University,