Letter from Fred A. Packard to Isaac Leeser;March 03, 1849 Letter from Fred A. Packard to Isaac Leeser asking for information about a man named Berk, who claims to be a Polish Jew converted to Christianity and who wishes to lecture. Packard asks Leeser if he knows anything about Berk's character, apart from his conversion. The letter is written from 146 Chestnut St, Philadelphia, and addressed to Mr. Leeser at 371 Walnut St, Philadelphia. It's dated March 3, 1849, and consists of one page on four sheets.