Some of them are on “Kol Hadaf” (Kol Halashon’s baby brother): 02-640-0000.
Click 3 for the (skimpy!) English category.
Then click 8 for Jewish history.
Rabbi Wein’s ~50 Gedolim biographies: click 1. Recommended.
(Some are missing or cut. Censorship perhaps?)
Rabbi Wein on Trei Assar’s background: click 2.
Rabbi Wein on several European yeshivos: click 4.
(Press 0 at any time to go back.)
You can also purchase them from the website.
Here’s the blurb:
The story of the Jewish people is the story of great individuals, and when times are especially dark, great individuals shine even more brightly. Rabbi Wein presents the biographies of some of the most outstanding personalities of the past two centuries –leaders who carried the people through the bitter decades between Czarist rule and the Holocaust. Warm, informative and inspiring, these lectures give us a picture of Jewish life in the recent past and more importantly, provide us with role models for our lives today.