Analysis of information sources in references of the Wikipedia article "Lorry (horse-drawn)" in English language version.
Dray. Heavy commercial or freight vehicle, usually drawn by a team of powerful draught horses. The first known type in Europe, used during the 17th century, was a mere framework on two wheels, having neither floors nor side planks/boards. Later and larger types may have been hung on side or cross springs and usually had four wheels. All were flat, without sides or raves, although some had removable side stakes, especially those for transporting barrels. While some had a raised seat for the driver other teams were led or controlled from a standing position. With an early brewer's dray the driver frequently sat on the first barrel. Known in American cities as a Transfer Dray.
Dray: See Lorrie. Lorrie: A strongly built, flat-topped, four-wheeled cart, which was hung on four sidesprings. It was used for transporting heavy goods such as sacks of coal or corn and could be pulled by a single horse with shafts, or a pair with either a pole or two pairs of shafts.
