The Milwaukee Art Museum’s endowment just got an $8 million boost from benefactors Donald and Donna Baumgartner. The gift will support the position of museum director, which will be renamed the Donna and Donald Baumgartner Director of the Milwaukee Art Museum. The donation comes at a pivotal time for the institution as Dan Keegan, the museum’s current director, retires this week. The museum has yet to announce a successor.