In my opinion it behooves anyone, such as yourselves, claiming to be experts on Valentino to read/study Professor Aurelio Miccoli's work and ours too for that matter. Instead of banning these books...might I suggest you read them.
For the record, from Professor Aurelio Miccoli, the obituary notice of Rudolph Valentino's sister, Maria Guglielmi Strada. She died on July 25, 1969. Ms. Huber was off by some 19 years and Ms. Hill's guess-timate was off by 7 or 8 years. Thank-you Professor Miccoli for sharing your source! (see below the notice as posted by daughter Gabriella and the full page of La Stampa from July 27, 1969 from which it is excerpted)