Rav Aaron Felder z”l, was the Rabbi of Congregation B’nai Israel Ohev Zedek for 32 years; a Talmid of Reb Moshe Feinstein z”l, he was a well-known author of several Sifrei Halacha, most notably, his sefer on Aveilus. His members recall with gratitude his commitment to  – and the realization of – building the Northeast Eruv and strengthening Kashrus in Philadelphia.

In his early years in Philadelphia, Rabbi Felder worked with Rabbi Shlomo Caplan of Congregation Beth Hamedrosh in Overbrook Park to form a Community Kashrus Organization. They joined with Rabbi Dov Aaron Brisman and Rabbi Mordechai Terebelo to create Community Kashrus of Greater Philadelphia. Rabbi Felder was elected the organization’s first president. Rabbi Felder devoted a lot of his time to supporting the organization, and researched many complex kashrus issues which helped guide the organization’s policies.