Learning on the Marcos and Adina Katz YUTorah site is sponsored today by Ruth Peyser Kestenbaum and Miriam & Alan Goldberg to mark the seventh yahrtzeit of their father, Irwin Peyser, Harav Yisroel Chaim ben R' Dovid V' Fraidah Raizel Peyser and by Harold and Sharon Lipsky in memory of Harold's parents, Ella Lipsky and Philip Lipsky and by Rhea and Leon Landau in memory of Jacob Frost