Articles of Agreement between Isaac Leeser of the one part and the Portuguese Jewish Congregation of the City of Philadelphia Articles of Agreement between Isaac Leeser and the Portuguese Jewish Congregation Mikveh Israel of Philadelphia, dated December 20, 1837 (22 Kislev 5598). This legal document outlines Leeser's duties as Reader (Chazan) for the congregation, including Sabbath and holiday services, funerals, and adherence to congregational rules. It also specifies his annual salary and payment schedule.