The members of the Delian League/Athenian Empire (c. 478-404 BC) can be categorized into two groups: the allied states (symmachoi) reported in the stone tablets of the Athenian tribute lists (454-409 BC), who contributed the symmachikos phoros ("allied tax") in money, and further allies, reported either in epigraphy or historiography, whose contribution consisted of ships, wood, grain, and military assistance; proper and occasional members, subject members and genuine allies.