Letter from Mr. & Mrs. B. J. Potsdamer to Isaac Leeser;June 14, 1865 This letter is an invitation to a ceremony at Handel & Haydn Hall in Philadelphia on June 14, 1865, at 4 p.m. The letter specifies that a carriage will be waiting. The invitation is from Mr. & Mrs. B. J. Potsdamer to Isaac Leeser at 1227 Walnut Street, Philadelphia.