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Ancestry.com. Dau's blue book for Detroit : including Ann Arbor, Birmingham, Grosse Ile, Grosse Pointe, Grosse Pointe Farms, Mt. Clemens, Northville, Pontiac, Orchard Lake, Wyandotte, Ypsilanti [database online]. Provo, UT: Ancestry.com Operations Inc, 2005.Dati originali: Dau's blue book for Detroit : including Ann Arbor, Birmingham, Grosse Ile, Grosse Pointe, Grosse Pointe Farms, Mt. Clemens, Northville, Pontiac, Orchard Lake, Wyandotte, Ypsilanti.. New York: Dau Pub. Co., 1911.