Pentelic and Hymettian working chips from filling behind foundations of east colonnade ... 20 May 1938 ... Pentelic and Hymettian working chips from filling behind foundations of east colonnade.
Middle 5th B.C ... Bouleuterion; Footing Trench for Foundations of Front Wall and East Wall
Early Roman ... East-West Trench D; Disturbed Fill over Wall Foundations just West of Mosaic Floor's Northwest Corner
Black Figure ... From Lowest Burnt Layer Beneath Foundations of Stoa in Two East-West Trial Tunnels at 16-17 and 25-26