This letter clarifies the Rambam's view on the order in writing Tefillin and Mezuzos, discusses sources for the term 'Shabbos Berachos', and concludes with a heartfelt blessing for the recipient's family to raise their children in Torah, marriage, and good deeds with health and abundance.
https://www.torahrecordings.com/rebbe/igroskodesh/007/012/2245