﻿MUSSELS 
  IN 
  TRIBUTARIES 
  OP 
  UPPER 
  MISSOURI 
  RIVER. 
  

  

  c 
  £5 
  50 
  100 
  

  

  Map 
  of 
  the 
  James. 
  Vermilion, 
  and 
  Big 
  Sioux 
  Rivers. 
  

  

  