Favorite this☆ Lewis Cass proclamation for the establishment of Oakland County, Michigan Description: Lewis Cass proclamation for the organization of Oakland County, Michigan and for the establishment of its seat of justice at Pontiac, Michigan. Details Resource ID: bh024673 Creator: Cass, Lewis, 1782-1866 Subject: Cass, Lewis, 1782-1866 Oakland County (Mich.)--History Michigan Territory--History Proclamations--Michigan--Oakland County Date Issued: 1820-03-28 Format: 4 unnumbered pages ; 9.75 x 8 in. Member of: Burton Historical Collection Filing Location: MS/Cass, Lewis, Box 6 Rights: Physical rights are retained by DPL. Copyright is retained in accordance with U.S. copyright laws.