There are actually two weiner joints, a couple of doors apart from each other - Curtis' and Coney Island.  Father ran one, son ran the other.  Now only Curtis is open and they go by the name of Curtis Coney Island.  The family has been selling their dogs since 1918.  And as the sign in the window declares, they serve the Original Coney Island Sauce.  Had mine that way with mustard and chopped fresh onion.  Good dog, friendly folk, still family run.