P.T. Barnums new & Greatest Show on Earth, located in United States, was founded in 1877. P.T. Barnums new & Greatest Show on Earth closed down in 1880.
1877: P. T. Barnum renewed hos 1876 show P.T. Barnums Greatest Show on Earth as P.T. Barnums new & Greatest Show on Earth
1879: Clipper** (29 March 1879) tells us: "The Barnum show has imported 4 diminutive African elephants". (Source: Richard Reynolds, Buckles blog)
1881: Merger with P. T. Barnum, James Bailey and James L. Hutchinson, "P.T. Barnums Greatest Show On Earth, And The Great London Circus, Sangers Royal British Menagerie and The Grand International Allied Shows United", soon shortened to "Barnum & London Circus".