The purpose of the Archelaus Smith Historical Society is to preserve the history and culture of Cape Sable Island by: 
 
Collecting and caring for artifacts connected with the Island 
 
Gathering and recording information concerning the Island's history 
 
Compiling Genealogies of Island families 
 
Operating the Archelaus Smith Museum where the public may view collected artifacts and have access to genealogical and historical information 
 
Making information about the Island available to the public through the publication and sale of Books 
 
Providing an outreach program to schools when requested