Warner traveled to New York to discuss the idea with Annie Aspinwall. He purchased of land from her and formed the Aspinwall Land Company in 1890. Pittsburghers, mostly from the upper-middle class, purchased lots from the 60 available home sites. By 1890, the town had 400 residents, most of whom were young couples with children. The existing government of O'Hara Township was having difficulty providing services to the rapidly growing area and, in 1892, 40 residents of the new community signed a petition requesting incorporation as "The Borough of Aspinwall, a self-governing unit."