100Specola Guestbook #100 | November 20, 1935: Marcantonio VII ColonnaBy Br. Robert Macke | 30 Jan 2022
96Specola Guestbook | September 19, 1935: Simón SarasolaBy Br. Robert Macke, Robert Trembley | 19 Dec 2021 | Sacred Space Astronomy
95Specola Guestbook | September 7, 1935: Théophile MoreuxBy Br. Robert Macke, Robert Trembley | 12 Dec 2021 | Sacred Space Astronomy
94Specola Guestbook | September 2, 1935: Agostino AddeoBy Br. Robert Macke | 5 Dec 2021 | Sacred Space Astronomy
93Specola Guestbook | August 13, 1935: Constantin Noppel, Camillo Guidi, and Guido Guidi.By Br. Robert Macke | 28 Nov 2021 | Sacred Space Astronomy
92Specola Guestbook | June 8, 1935: Francesco MoranoBy Br. Robert Macke | 21 Nov 2021 | Sacred Space Astronomy