Owing to the extreme difficulty of making large pieces of glass, and also because it was not deemed prudent to waste the smaller pieces, many of the Queen Anne mirrors were made of two pieces of glass arranged so that one plate overlapped the other. Later, these parts were joined by strips of gilt molding. Several of these mirrors are still in existence, one of the earlier type being owned by Mrs. Walter L. Harris of Salem, showing a simple glass with gilt figure ornament. One of the finest mirror designers was Chippendale, who wrought out Chinese patterns, his schemes showing a wonderful weaving of birds, flowers, animals, and even human beings. One design, typical of his work, shows a flat wooden frame cut in graceful arches, with a gilded eagle perched on top with outspread wings. Gilt rosettes and flowers, as well as ornaments strung on wire, were frequently used by him, and are considered characteristic of his type. It was customary for the frames to rest on a pair of mirror knobs, which were fitted to the lower edge of the frame and screwed firmly to the wall. These knobs were often made of brass, but the most fashionable ones were of copper overlaid with Battersea enamel, and framed in rings of brass. Among the most quaint designs which were carried out on these mirror knobs were heads of prominent persons such as Washington, Lafayette, and Lord Nelson. Bright-colored flowers and landscapes, the American eagle, and the thirteen stars, representing the original colonies, were also frequently used, as were the queer designs of the funeral urn and weeping willow, that seemed to especially appeal to our ancestors' taste. By the year 1780 American mirror manufacturers had evolved a style peculiarly their own, and the glasses made at that time were known as Constitution mirrors. The frames were not unusual in design, generally being made of wood, in more or less elaborate shapes, but they were original in their decoration, especially in their tops. These generally were graced by the American eagle, the newly chosen emblem of the Republic, executed either in plaster covered with gilt, or in wood. A good example of the Constitution type is shown in the Lord house at Newton. The top shows the usual eagle decoration, though the cornice is overhanging, fixing the date of manufacture early in the nineteenth century. This mirror is especially historic, having belonged to the brilliant Revolutionary hero, Henry Knox, General Washington's most intimate friend. Another handsome mirror of the same period is one that was originally in the Harrod mansion at Newburyport. It was one of the few things saved when the house was burned at the time of the great fire in 1812. This mirror now hangs in the home of a lineal descendant of the Harrod family in Salem. It is in perfect condition, and shows the eagle top and draped sides.