The map itself was built using a section of File:Greece map blank.svg. Towns were placed using geographic coordinates. There is some question where the ancient city of Messene was located. Maps (see "Greece under Theban Headship") place it well inland while the modern day Messene is close to the coast.

The borders of the various political entities were taken from several sources:

• Chamoux, François (2002) Hellenistic civilization, Wiley-Blackwell, ISBN 9780631222422, p. 206, for the Achaean League.
• Shepherd, William (1911) "Greece under Theban Headship", Historical Atlas, Henry Holt and Company. p. 17, was used as the primary reference for the Spartan borders. When there was a conflict with the Chamoux map, I used the Chamoux map.

Any additional information on borders and areas under control would be very welcome.

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