AKC Works 006
|Title||Osservazione della cometa|
|Cited in||AHSI 162 783|
Fletcher in AHSI 162 783, p. 567, describes the item as a printed broadsheet, circulated by Kircher to the majority oh his astronomically interested correspondents containing observations on the Comet of December 1665 to January 1666, no indication of recipient - Bibl. Nat. Fonds français, n.a. 10638, f. 18.