If your request is regarding Native Americans, there is an artist named Karl
Bodner who might be what your looking for. He traveled in the 19th century into
Indian country. I saw his works in an exhibition at the Smithsonian about 15
years ago but I believe that the exhibition was organized by the Joslyn Museum
here is the link I know there was a catalogue and that issue was discussed
 
http://www.joslyn.org/permcol/west/pages/bodmer1.html
 
Prabuddha Majumdar wrote:
 
> To all members,
>
> I am collecting material for a write-up on American Indian Painting. Could
> anybody help me regarding influence of  American Indian Painting on European
> artists? A brief description will do. That is the information I am badly in
> need of. Please help.
>
> P.MAJUMDAR
> FD-417,SALT LAKE, CALCUTTA,INDIA-700091