Illinois State Museum issued the following announcement on Oct. 16.
Our new Museum Shop is taking shape for its Nov. opening. Help us get ready! Visit ISM's Springfield location and pick out something new to you from our previous inventory. All items are available for a donation of any amount. October 15 - 17 from 10 a.m. to 4 p.m.
Original source can be found here.
Source: Illinois State Museum