There are "remains of his uncommon talents" which are not in that list. Hadfield is known, for example, to have provided plans and designs for the Marine Barracks in Washington.[70] There are also good reasons to believe that he designed Analostan, located on what is now called Theodore Roosevelt Island, for John Mason, Thomson Francis Mason's uncle.[71] Similarities to the Work of Hadfield Among the few known drawings of Hadfield is one labelled "A Country House--Geo. Hadfield--Exhibited Arc. designs at Royal acad. in 1780-82...."[72] The house is of three-part construction and has windows set into arched recessed panels. Arlington House (Custis-Lee Mansion) is of three-part construction and has windows set into arched recessed panels.[73] The City Hall in Washington, now the District of Columbia Court House, is of three-part construction, with connecting hyphens, and has windows set into arched recessed panels.[74] The same is true of the plan for Analostan, though one wing evidently was never constructed. Huntley, too, is of three-part construction and though the windows are not set into arched recessed panels, they are set into the center of square recessed panels, which serve the same design function of catching and reflecting light and shadow. The recessed arch appears at Huntley in the root cellar superstructure, however, duplicating Hadfield's use in the structures mentioned above. [Illustration: Figure 26. Arlington House (Custis-Lee Mansion) showing portico designed by Hadfield. Photo courtesy National Park Service.] [Illustration: Figure 27. Analostan, now demolished, formerly stood on Theodore Roosevelt Island. Possibly designed by Hadfield. Photo by Abbie Rowe. Courtesy National Park Service.] Arlington House has a two story center section with one story wings, as does Huntley. It is possible that had Huntley been built on different terrain, it might have followed the more common "I" plan of Arlington House. Given the limited space on Huntley's hill, however, the "H" plan obviously made more usable space available on the site. The chimneys at Arlington, and those at Huntley, are placed in the same position in relation to the center structure and the wings; the wooden mantels in both houses have obvious stylistic similarities. When Huntley is compared with Analostan another similarity shows up. The gable end at Analostan has a relatively shallow cornice, common in the period, outlining a pediment strikingly similar to the gable ends of the wings at Huntley. Located within the pediment at both houses is an elliptical ventilator. The design for Huntley could easily have come from Hadfield. There were opportunities for T.F. Mason to have met him through Jefferson or through his uncle, General John Mason of Analostan.