The Library of Congress lists 105 book titles when I searched for the keyword "Devils Lake" :

http://catalog.loc.gov/cgi-bin/Pwebrecon.cgi?Search_Arg=%22D...

Perhaps there is a city directory in the list. You could also try the New York Public Library :

http://catnyp.nypl.org

or the North Dakota Historical Society in Bismarck or the North Dakota State Library.

Reg Niles