Nelson, James Gordon. <br/><br/>
The last refuge / 
by J. G. Nelson. 
 - Harvest House :  Montreal,  1973. 
 - 230 p. :  maps. ;  23 cm. 
<br/><br/>Bibliography : p. 195-202. 
<br/><br/><label>ISBN: </label>0887721419 
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Cypress Hills Region (Alta. and Sask.)--History.<br/>Montana--History.