Exodus 1:11

Treasure cities] store cities, situated on the frontier, and serving both as strongholds for defence against invasion and as military depots of provisions and arms. Pithom] i.e. the 'Abode of the Setting Sun,' has been identifled with Tel-el Maskhuta, between Kassassin and Ismaїliyeh. The walls of this ancient city are found to have been constructed of bricks made of Nile mud and chopped straw. Raamses] or Rameses, has not yet been identified, but is supposed to have been situated at the modern Tel-el Kebir. It was in existence at the time of Joseph, as appears from Genesis 47:11, so that it was probably repaired or enlarged at a later date.