R. Aharon Kotler and the campaign to ban mail on Erev Shabbos

Shiur 14 (91) on halachic topics - by Rabbi Shraga Dovid Homnick, Sgan Rosh Kolel, Kolel L'horaah Ma'asis Crown Heights

https://www.youtube.com/watch?v=lTF4Cw3oJdg