found: State of Indiana web site:(Emblems & Symbols: What is a Hoosier: For well over a century and a half the people of Indiana have been called Hoosiers. It is one of the oldest of state nicknames and has had a wider acceptance than most)
found: Dickson, P. Labels for locals, 2006(Indiana: Hoosiers; occasionally Indianan)
found: Am. heritage dict., 1992(Indiana: Indianan; Indianian)
found: U.S. Govt. Print. Off. Style manual, 2008(Nationalities, etc.: 5.23 Indianian)
found: U.S. Government Publishing Office style manual, 2016, via WWW, Aug. 16, 2022:p. 95 (In designating the natives of the States, the following forms will be used: Hoosier (Indiana)) 2008, p. 93 (In designating the natives of the States, the following forms will be used: Indianian)
found: Groppe, M. Don't call them Indianians; they're Hoosiers, via USA today online, posted Jan. 12, 2017, viewed Aug. 16, 2022(It's official. The residents of Indiana are no longer "Indianians." Or even "Indianans." Call them what they call themselves: Hoosiers. So says the federal government--on page 95 of the updated U.S. Government Publishing Office's style manual released Thursday. The change came at the request of Sen. Joe Donnelly and former senator Dan Coats, who argued Indiana residents have proudly called themselves Hoosiers for more than 180 years, even if no one is sure where the term came from. It's only non-Hoosiers who use the term "Indianian.")
found: Wilson, R. Government to begin calling Indiana residents Hoosiers, via The Hill website, posted Jan. 12, 2017, viewed Aug. 16, 2022(Residents of Indianapolis and Gary and Kokomo will now be officially recognized by the federal government as Hoosiers, rather than Indianans, according to a new style guide released Thursday morning. The Government Publishing Office will formally refer to residents of Indiana by what has been the common demonym for more than a century and a half)