Un anneau de corail lettere di Paul Valéry a Marguerite e Roffredo Caetani - Speranza Armani, Ada (Bulzoni, 1986)
Keywords: Caetani, Marguerite; Caetani, Roffredo <1871-1961>; Valéry, Paul <1871-1945> -- Correspondence; Caetani, Marguerite -- 1880-1963; Valéry, Paul -- 1871-1945; Geschichte 1900-2000; Poets, French -- 20th century -- Correspondence; Briefsammlung