If you prefer to write a check for tickets - Click here to download a Form. Keep a copy for your records and return it with a check made payable to: African American Cultural and Historical Museum of Washtenaw County (AACHM). Mail to AACHM, PO Box 130724, Ann Arbor, MI 48113. Sponsorship deadline is Monday, August 28, 2023 If you prefer online - Scroll down. Sponsorship deadline was Monday, August 28, 2023.