Drawing by S.T.Dadd presenting the details of goalposts (10 feet wide and 3 feet high) used by the London League in 1892. There are detailed construction details describing how to built this kind of goalposts, suitable for open water matches. The drawing appears in the 1893 book of Archibald Sinclair and William Henry.Source: Swimming as an art by A.Sinclair and W.Henry (Badminton Library, 1883)
