The Possible: Selected Extracts from the Speech by Senator George J. Mitchell on the Occasion of the 25th Anniversary of the Good Friday Agreement, Queens University, Belfast, 2023-05, Box: 800, Folder: 10. The Atlantic Philanthropies Archives, 8540. Division of Rare and Manuscript Collections. https://archives.library.cornell.edu/repositories/2/archival_objects/1768001 Accessed April 07, 2026.