"Acquisition" . "The collection, which remained in the Bredig family until 2018, was inherited by George Bredig after the death of his parents. Upon discovering a trove of historic material, George arranged for the collection to be sold through a Pennsylvania based autograph dealer, The Raab Collection. The Institute purchased the collection in April 2019, with proceeds generously donated by the Walder Foundation. The Walder Foundation is a private family foundation based in the Chicago area dedicated to addressing critical issues related to Science Innovation, Jewish Life, Immigrant Advocacy, sustainability, and the performing arts."@eng . .