History of the Peloponnesian War
Thucydides
Thucydides, Vol. 1-4. Smith, Charles Foster, translator. London and Cambridge, MA: Heinemann and Harvard University Press, 1919-1923.
But in addition to the trouble under which they already laboured, the Athenians suffered further hardship owing to the crowding into the city of the people from the country districts; and this affected the new arrivals especially.
For since no houses were available for them and they had to live in huts that were stifling in the hot season, they perished in wild disorder. Bodies of dying men lay one upon another, and half-dead people rolled about in the streets and, in their longing for water, near all the fountains.