Mishna Berura 100th Anniversary Friday

This Friday, the 19th of Heshvan, while certain people will (hopefully not) be parading in Yerushalayim, Jews around the world will be commemorating the 100th anniversary of the writing of the Mishna Berura, the halachic work by Rav Yisrael Meir HaKohen of Radin, also known as the Hafetz Haim. He died in 1933 (see the NY Times obit). At the end of his work, on the last page of Hilchot Megillah, he writes that he completed it on 19 MarHeshvan, 5667.
May this anniversary be a Zechut for us all.