Sefer Ahavath Chesed by the Chofetz Chaim (Rabbi Yisrael Meir Kagan) is one of his most well-known books after the Sefer Chofetz Chaim. It is a compendium of the Torah's laws regarding kindness – part of his lifelong work to bring Jewry closer to Hashem.
Feldheim, hardcover, pocket size, 231 pages.