George Adams II ((1750-95) was his father's apprentice, and took over the business after his death in 1772. Clifton notes that George Adams I was working at the sign of Tycho Brahe's head from 1738, followed by George II, then his widow Hannah (d. 1810) before the premises were finally occupied by his brother Dudley Adams (1762-1830) from 1796 until 1826 (pp. 2-3). Calvert lists three Adams pieces (p. 11, items 6-8), of which no. 7 is a reproduction and no. 8 is a photograph. No. 6 is illustrated as plate 2, and uses the same portrait of Tycho Brahe. The first five lines are the same on both, with the exception of "No 60.", which does not appear on the Science Museum trade card, and must have been added after the numbering of Fleet Street circa 1765. Although the sequence of the instruments listed has been changed, it is striking that many items are common to both of these trade cards, despite a gap of at least ten years between them. The change in sequence is due to aditions and movements, such as "NEW GLOBES ... of Eighteen, Twelve, Six, and Three inches Diameter" and "A TREATISE describing their Construction and Use ... Price six Shilings" (presumably the fifth item on the receipt), changing the position of "Hadley's QUADRANTS and SEXTANTS" from the first to the second item listed, when on the earlier card globes received a more concise entry in the third column. Other changes include the omission of "MULTIPLYING Glasses", the change from "so much famed QUICKSILVER THERMOMETERS" to the balder "THERMOMETERS", and the addition of "EQUATORIAL INSTRUMENTS", to the present example.