Spirit of '76 (mango)
The 'Spirit of '76' mango is a named mango cultivar that originated in south Florida. History 
The original tree was grown on the property of Laurence Zill of Boynton Beach, Florida and was reportedly a seedling of the Zill cultivar that had been open cross pollinated with Haden. It received its name for having first fruited during the US bicentennial celebrations. A 2005 pedigree analysis estimated that Spirit of '76 was indeed a Haden × Zill cross. Though Spirit of '76 did not gain commercial acceptance due to its soft flesh, it has been propagated as nursery stock and sold on a limited basis as a dooryard tree for home growers in Florida. Spirit of '76 trees are planted in the collections of the USDA's germplasm repository in Miami, Florida, and the Miami-Dade Fruit and Spice Park in Homestead, Florida. Description 
The fruit is oblong in shape, with a rounded base and rounded apex that sometimes has a small lateral beak. It averages about a pound in weight at maturity. The skin color is yellow with red blush, and the flesh is yellow in color. It is completely fiberless with a rich, aromatic flavor, and contains a monoembryonic seed. The fruit ripen from June to July in Florida. The trees are moderately vigorous growers with spreading canopies. See also 
List of mango cultivars

References 

Mango cultivars
Agriculture in Florida