If you just want to read it (not necessarily own a printed copy), it is available at gutenberg.org: http://www.gutenberg.org/files/4367/4367-h/4367-h.htm
- B. Clay Shannon 

    On Saturday, December 29, 2018, 9:09:04 PM PST, Kenneth M. Sanderson <[log in to unmask]> wrote:  
 
 Charles,

The Grant memoir "with which Mark Twain was involved" is the first one,
published by Charles L. Webster, the husband of Clemens's niece, Annie
Moffat Webster.

Good luck finding a decent copy.

Ken Sanderson


On Sat, Dec 29, 2018 at 2:07 PM Charles Cogar <[log in to unmask]>
wrote:

> Hello,
>
> There are many editions of this book. Which edition is the one with which
> Mark Twain was involved? That's the one I want to buy.
>
> Thank you,
>
> Charles Cogar
> Louisiana Missouri
>