Letter from Delle Siane David to Isaac Leeser;December 19, 1859 Letter written in French and English from Delle Siane David to Isaac Leeser on December 19, 1859, from Philadelphia, PA. The letter requests protection and includes a postscript asking Leeser to let the author know where to find him at 1833 Arch Street, near 19th Street. The letter is written on a single sheet of paper containing two pages.