William Dymock and David Mitchell
William was commissioned by Sydney book lover David Scott Mitchell (1836-1907) to travel to London and source books for him; and of course, for the Dymock's bookstore. Mitchell's collection started with English literature, and then turned almost exclusively, to collecting Australiana, with the ambitious goal to collect a copy of every single document, no matter its format, relating to Australia, the south-western Pacific, the East Indies, and Antarctica.
On Mitchell's death in July 1907, he gifted his collections to the Public (now State) Library of New South Wales with an endowment of £70,000 to fund collection additions. As a condition of the gift, the NSW government was required to construct a building to house the collections to be known as the Mitchell Library, now part of the State Library's Macquarie Street precinct.
William died aged 39 in 1900, he was unmarried and childless. His business was left to his sister Marjory Dymock (1853-1924), who was married to John Forsyth (1846-1915). John became Dymocks chairman.