From the late 1800s to the early 1900s, 1.3 million people emigrated from Sweden to America. This meant that a large proportion of the world's Swedish speakers at that time actually lived in America, and many Swedes still move to the US today. Nevertheless, we know very little about both the American Swedish of that time and the Swedish spoken in America today. The project examines how Swedish in Illinois, Wisconsin and Texas, USA, looks like today and how it has changed over time, thus contributing to a more comprehensive picture of Swedish in the world. The material is collected in a robust database for researchers around the world. The database makes it possible to examine how Swedish Americans relate to and use Swedish and how the language system differs from the older American Swedish, standard Swedish and the dialects spoken in the areas from which the informants originate. The material is thus of interest to various types of linguists, but is also relevant to researchers in other disciplines, such as historians and ethnologists. There are still American-born speakers who use the older American Swedish that originated in the mass emigration around the turn of the century 1800-1900. These speakers are now over 80 years old, and the old emigrant Swedish is very much a dying variety. It is therefore urgent to find and record the descendants of the Swedes who emigrated in the 19th and early 20th centuries.