Founded as the Jewish Hospital for the Aged, Infirmed and Destitute in August, 1864, this hospital was an important institution in the history of the Jews in Philadelphia, providing care for "the suffering poor of all religions". It officially opened in 1866, starting with 22 beds (the linens donated by philanthropist Moses Rosenbach) at 56th and Haverford Road in West Philadelphia. The hospital soon expanded, moving to Old York Road in 1873, and opening various homes and clinics. In 1952, the Jewish hospital merged with Northern Liberties Hospital and Mount Sinai Hospital to form a single medical center. It was named for Albert Einstein after the volunteer president of Mount Sinai wrote a letter asking Einstein for permission to use his name. Einstein granted his permission on June 28 of that year.