British Museum Department of the Middle East group of stone reliefs from the excavations of Max von Oppenheim at Tell Halaf that was purchased in 1920. More material followed from the excavations of Max Mallowan at Chagar Bazar and Tell Brak in 1935–1938 and from Woolley at Alalakh in the years just before and after the Second World War. Mallowan returned with his wife Agatha Christie to carry out further digs at Nimrud in the postwar period which secured many important artefacts for the museum. The collection of Palestinian material was strengthened by the work of Kathleen Kenyon at Jericho in the 1950s and the acquisition in
Assyrian sculpture by the Assyrian Exploration Fund, established in 1853 to dig for the benefit of British collections. Although it was not yet realized, by "the close of excavations in 1855, the hectic Heroic Age of Assyrian archaeology ended", with the great majority of surviving Assyrian sculpture found. Work has continued up to the present day, but no new palaces have been found at the capitals, and finds have mostly been isolated pieces, such as Rassam's discovery in 1878 of two of the Balawat Gates. Many of the pieces reburied have been re-excavated, some very quickly by art dealers, and others by