Pope Pius XII wrote a papal document in 1951 on the Holy Rosary, asking all the clergy to encourage families to say the Rosary, especially during the month of October.
We consider the Holy Rosary the most convenient and most fruitful means, as is clearly suggested by the very origin of this practice, heavenly rather than human, and by its nature. What prayers are better adapted and more beautiful than the Lord’s prayer and the angelic salutation, which are the flowers with which this mystical crown is formed? With meditation of the Sacred Mysteries added to the vocal prayers, there emerges another very great advantage, so that all, even the most simple and least educated, have in this a prompt and easy way to nourish and preserve their own faith.
via October: Month of the Holy Rosary – Seton Home Study School.