Gill, David, “Finlay’s Comet. Photograph II, 1882 Oct. 20d 15h 30m. Exposure 60m, equivalent focus of lens about 11 inches”, 1905-02-24, Bibliothèque de l'Observatoire de Paris, FR751142302-Z006221. Consulté le 28 mars 2024, https://bibnum.explore.psl.eu/s/psl/ark:/18469/1js67