U. & GEOLOGICAL SURVEY BULLETIN 611 PLATE XiIll 
A, POMPEYS PILLAR, MONT., AS SEEN FROM THE NORTHERN PACIFIC RAILWAY, 
The inscription shown below is on the other side of the pillar, 
INSCRIPTION MADE BY CAPTAIN CLARK ON POMPEYS PILLAR JULY 25, 1806. 
Now protected by an iron grating. Photograph furnished by the Northern Pacific Railway. 
