Hail from the chiefs: Former heads of the National Museum of American Jewish History and co-chairs for its "Only in America Gala"at the Park Hyatt at the Bellevue, only see good things ahead for the museum. Among the past museum prexys cheering on the night with a glass of the old bubbly (from left) are Mervin Wilf, Ruth Septee, Ruth Sarner-Libros, Hillard Madway, Lyn M. Ross, Bubbles Seidenberg and Matthew Kamens.