Try this.  http://dig.lib.niu.edu/twain/interactive.html.  My idiotic Windows 8 won't open it, but if memory serves, it might help.  

Gregg Camfield
________________________________________
From: Mark Twain Forum <[log in to unmask]> on behalf of Leslie MYRICK <[log in to unmask]>
Sent: Tuesday, April 22, 2014 7:15 PM
To: [log in to unmask]
Subject: Re: Note for Twain Scholars

You might be able to find relevant digitized maps on the Library of
Congress site, e.g. under Railroad Maps (close as I can see to speculators'
maps)
http://www.loc.gov/maps/?q=railroad+maps
Leslie Myrick


On Tue, Apr 22, 2014 at 6:07 PM, Harris, Susan Kumin <[log in to unmask]> wrote:

> Dear All,
> In conjunction with a project on place and space in The Gilded Age, one of
> =
> my students is looking for speculators' maps of the Mississippi or
> Missouri=
>  River region in the post-Civil War period.  Please see his note below.
>  If=
>  any of you know of a site where he can access this material, we would
> both=
>  be grateful.  He has already, on Henry Sweets' recommendation, queried
> his=
> torical societies, to no avail. His email address is [log in to unmask]
> <ma=
> ilto:[log in to unmask]>. Thank you!  -- susan Harris
>
>
> Sent from my iPad
>
> Begin forwarded message:
>
> From: "Cunningham IV, Will" <[log in to unmask]<mailto:
> [log in to unmask]
> >>
> Date: April 22, 2014 at 3:22:26 PM CDT
> To: "Harris, Susan Kumin" <[log in to unmask]<mailto:[log in to unmask]>>
> Subject: Note for Twain Scholars
>
> Greetings!
>
> I am in the beginning stages of a project on Twain and Warner's The Gilded
> =
> Age. I am interested in geographic representation and cartography,
> especial=
> ly in relation to urban planning. In the novel, Sellers, Harry, and
> Phillip=
>  create a speculation map of the fictitious town of Napoleon. According to
> =
> Mr. Sweets (Executive Director of the Mark Twain Boyhood Home & Museum),
> Ma=
> rion City was most likely Twain's inspiration for this place. I am trying
> (=
> without luck) to get my hands on any period maps of Marion City - or, for
> t=
> hat matter, any speculative maps along the Mississippi River from the
> latte=
> r half of the 19th century.
>
> Any help would be much appreciated!
>
> Best,
>
> Will Cunningham
> PhD Candidate
> The University of Kansas
>