This is from Fairchild's curator's choice description, which in my opinion is pretty spot on with both the tree and fruit from the tree that is now in Ed's family/possession:
Frances Hargrave is a ‘Haden’ seedling. The fruit are oblong with a pointed nose and a weight of 16.5 oz (468 g). The color is aureolin yellow from base to apex and has a smooth skin. The flesh is of the same color with no fiber and a delicate flavor of vanilla and peach with a distinct coconut aroma. The tree grows slowly and responds quite positively to horticultural management, forming a dense, dark green canopy with large, healthy leaves. The yields are excellent, ripening during the early season in Florida. The tree, bloom and fruit have excellent disease tolerance. Fruit has excellent stage, with good potential for South Florida.