EXPLANATORY NOTE 



The series embodies results of investigations, usually 

 ol restricted scope, intended to aid or direct management 

 or utilization practices and as guides for administrative 

 or legislative action, it is issued in limited quantities for 

 official use of Federal, State or cooperating agencies and in 

 processed form for economy and to avoid delay in publication 



Representatives from the States of Illinois, Iowa, Minnesota, Missouri 

 and Wisconsin and from the United States Fish and Wildlife Service, meeting in 

 December, 1943, formed the Upper Mississippi River Conservation Committee 

 for the purpose of carrying on scientific investigations of the fishery and wildlife 

 resources of the Mississippi River from Caruthersville, Missouri, to Hastings, 

 Minnesota. Field operations were started in 1944. 



