Is this the first printed map showing the boundaries of Dakota Territory? #MapMonday

Map of the Ceded Part of Dakota Territory: Showing Also Portions of Minnesota, Iowa & Nebraska, Smith, B. M., et al, 1861. Archives and Special Collection has this map in the Chilson Collection with the call number 4130 S64 1861.

The inset map in the upper left corner shows the entire Dakota Territory and its boundaries.