Nationalities, etc.
5.22. The table on Demonyms in Chapter 17 ``Useful Tables'' shows
forms to be used for nouns and adjectives denoting nationality.
5.23. In designating the natives of the States, the following forms
will be used.
Alabamian Louisianian Ohioan
Alaskan Mainer Oklahoman
Arizonan Marylander Oregonian
Arkansan Massachusettsan Pennsylvanian
Californian Michiganian Rhode Islander
Coloradan Minnesotan South Carolinian
Connecticuter Mississippian South Dakotan
Delawarean Missourian Tennessean
Floridian Montanan Texan
Georgian Nebraskan Utahn
Hawaiian Nevadan Vermonter
Idahoan New Hampshirite Virginian
Illinoisan New Jerseyan Washingtonian
Indianian New Mexican West Virginian
Iowan New Yorker Wisconsinite
Kansan North Carolinian Wyomingite
Kentuckian North Dakotan
From:
[U.S. Government Printing Office Style Manual]
[Chapter 5 - Spelling]