Sources:

• Ann Arbor District Library: Making of Ann Arbor exhibit
• Russell Bidlack, Ann Arbor's First Lady: Events in the Life of Ann I. Allen, book published 1988, Bentley Historical Library
• The Story of Ann Allen, Ann Arbor's First Lady, transcript of lecture by Russell Bidlack, Washtenaw County Historical Society - originally published in the March 1997 issue of Washtenaw Impressions.
• Ann Arbor Old News, an outstanding collection of scanned newspapers from the late 1800s. Project of the Ann Arbor District Library.
• TreeTownHistory, Twitter account delivery facts and pictures about Ann Arbor's past.