All I have is a bibliographic citation for a series of directories :

North Dakota Library Directory. 1991/92-<2003>. Bismarck: North Dakota State Library, [1991]-__. __ vols. Biennial, 1991/92; annual, 1996-__. Running title: Directory of North Dakota Libraries. (Libraries--North Dakota--Directories) (North Dakota State Library) (LC 96-658686)

Reg Niles