Thank you for visiting! Please note that all of the documents contained on this page were composed by Mrs. Christina Valenzuela, OP and are offered free of charge, for personal non-commercial use only. They are not affiliated with the Archdiocese of Boston and represent the opinions and work of the author alone. This newsletter is not designed to replace formal instruction in NFP. If you would like to learn the Boston Cross-Check Method, please visit the Archdiocese of Boston webpage or contact me.