Wilson next proceeded to procure copper plates of the necessary sizes for his globes, and he projected his maps on them in sections. He received a few lessons in engraving from Amos Doolittle of New Haven, but he was otherwise completely self-taught. Wilson exhibited the first edition of his globes in Boston in 1814. They created a sensation, and many persons asked to see the maker, but Wilson was reluctant to come forward because of his coarse clothing and rustic manners. He was greatly encouraged, however, by the public interest in his work, and he continued to make globes in Bradford (see fig. 16). In about 1815 Wilson and his three sons, all of whom were as ingenious as the father, formed a company to manufacture globes in Albany. There they produced terrestrial and celestial globes, the latter showing as many as 5,000 stars. Wilson produced a new set of plates in 1826 and made globes in several sizes. Even after he had reached the age of 83 years he constructed an excellent planetarium, engraving the large copperplate himself. Wilson was married three times and was the father of 14 children. He died at the age of 92 in March 1855 at Bradford.[27] _Massachusetts_ A surprisingly small number of the Massachusetts craftsmen working before the end of the 18th century produced scientific instruments. Among the very earliest were several members of the King family of Salem. Daniel King (1704-1790) was born in Salem on November 17, 1704. At the time of his death Rev. William Bentley spoke of him as a "maker of Mathematical Instruments" and a "teacher of Mathematics."[28] [Illustration: Figure 17.--Brass surveying compass made by Stephen Greenleaf (fl. 1745) of Boston. Photo courtesy New Hampshire Historical Society, Concord.] Following Daniel's death, his business in instruments was inherited by his son Benjamin King (1740-1804), of Salem. Benjamin specialized in producing nautical instruments, and several of his Davis quadrants have survived in public collections. When he died on December 26, 1804, Reverend Bentley wrote that King was "... a Mathematical Instrument maker, in that branch which immediately regarded practical navigation by quadrant and compass. He supported a very good character through life & was much esteemed."[29] Another of the very early mathematical instrument makers in Massachusetts was Stephen Greenleaf (see fig. 17), who kept a shop on Queen Street opposite the prison in Boston where He makes and Mends all Sorts of Mathematical Instruments, as Theodolites, Spirit Levels, Semicircles, Circumferences, and Protractors, Horizontal and Equinoctial Sun Dials, Azimuth and Amplitude Compasses, Elliptical and Triangular Compasses, and all sorts of Common Compasses ... N.B. He sets Load Stones on Silver or Brass, after the best manner.[30]