Letter from L. J. Leberman, Jacob Langsdorf, Solomon Kayser, E. Springer, and H.B. Feuslman to Isaac Leeser;December 20, 1853 A letter from L. J. Leberman, Jacob Langsdorf, Solomon Kayser, E. Springer, and H. B. Feuslman to Reverend Isaac Leeser, requesting that he deliver a discourse at the dedication of the Mount Sinai Burial Ground on December 25th, 1853, at noon. The letter is signed by all five individuals, and the envelope address includes the recipient's address: No. 371 Walnut Street, Philadelphia.