Patti, Carlotta - Autograph Letter Signed

Italian soprano (1835-1889), and sister of the famed Adelina Patti. 

Autograph letter signed,  3 pages of a folded 4-page letter, written in French, sold untranslated. Each folded page is 4.5 x 7 inches, total item unfolded is 7 x 9 inches, some mounting traces on an empty page, otherwise in very good condition.