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| | 1843 Chicago City Directory - O'Brien, Dennis - Outhet, John C. |
 | | Ogden, Mahlon Dickerson (Arnold and O.), res Ontario, bet Dearborn and Wolcott, probate judge [died, Elmhurst, Feb. 13, 1880, a. |
 | | Ogden, William Butler (O. and Jones), res Ontario, bet Cass and Rush [died, Aug. 3, 1877, aged 72, at Boscobel-his residence, near High Bridge, on the Harlem River, New York.; Chicago's 1st mayor. |
 | | Osborn, William, shoe dealer, Jerome Beecher, res 145 Madison [died January 2, 1884, aged 71. |
| all-ancestors.com /chicago/chicago031.htm (570 words) |
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