The Duke of Queensberry and Dover presenting the Act of Union to Queen Ann [graphic]Grignion, Charles, 1721-1810, printmaker[1770]engTitle etched above image.Publication place and date inferred from those of the magazine for which this plate was engraved.Plate from: The Oxford magazine, or, Universal museum ... London : Printed for the authors, v. 4 (1770), page 227.Design within decorative frame, with royal arms and crown and signed below Magna Britannia MDCCVI.Temporary local subject terms: Acts: Act of Union, 1706 -- Heralds -- Flags.