One of the major suppliers of letter boxes during the twentieth century. From the Mungal Foundry, near Falkirk, Stirlingshire they cast pillar boxes (from 1922), wall boxes (from 1952) and lamp boxes (from 1969 to 1982). The ironworks were first established in 1759 and played an important part in the Industrial Revolution as well as becoming famous for its naval cannons: the company became insolvent in 1982 after 223 years casting iron.