Much work has been done in the last fifty years to document the speech of Finnish Americans in the United States and Canada, though little new data has been brought forward in the last 25 years. Pertti Virtaranta did extensive research on the Finnish spoken in North America, particularly in the Upper Midwest and Canada, taking three trips from 1965-1980 to interview speakers. The interviews had standard questions asked of everyone including: why they (or their families) left Finland, what was the trip like, and how was it finding a job once in America. Otherwise, the interviews consisted of free conversation on whatever subject the participants found most interesting. Maisa Martin wrote a dissertation on the phonology and morphology of American Finnish where she discusses the borrowings and changes between Finland Finnish and American Finnish. Donald Larmouth did extensive research on the Finnish used by four generations in rural Finnish communities in northern Minnesota, interviewing a total of 62 respondents. In his interviews he elicits personal narratives, has participants complete picture identification tasks with simple cartoons, and give translations of sentences. He documents what changes the language seems to have undergone, notably the levelling of several cases including the accusative and partitive.