Includes: Letters from A Slaby, with a signed photograph, 1898-9 Letters from Reginald Fessenden, one with draft reply, inviting Marconi to give a lecture at the Academy of Science of Pittsburgh, 1899 Letters from Josephine Holman, to whom Marconi was briefly engaged, 1900-1, n.d. Letter from John Henniker Heaton about a meeting between Austen…