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186. The Next Twenty-Five Years, Proceedings of the Vatican Observatory, Martin Harwit, Conference Held in Castel Gandolfo, 1 to 9 July, 1985, Ed. W.R. Stoeger, S.J., Specola Vaticana, 1987, P566, 1987,, Box: 21, Folder: 41. Martin Harwit papers, 14-7-2402. Division of Rare and Manuscript Collections. https://archives.library.cornell.edu/repositories/2/archival_objects/174537 Accessed February 02, 2026.