John, this is all I could find on Hall :HALL Florida Originated on place of Willis Hall, Miami as seedling of unknown origin. Tree heavy bearing & hardy. Fruit season, Nov., Dec.; color, dk. green; weight 20- 30 ozs.; shape, pyriform; skin, smooth, thick; quality, fine; oil, 12-16%. Seed medium. (CAS Yearbook 1950) Origin, FL; Race, WIxG; Flowering group, B (Lahav & Gazit) (originated in Miami; of unknown parentage; fruited in 1937, propagated in 1938); pear-shaped; lg.;skin smooth, fairly thick; flesh deep-yellow, 12-16% oil; seed med. lg.,tight. Season: Nov. & Dec. Heavy bearer & cold-hardy but subject to scab. (J.Morton 1987)