Actual state plan of the Heliaia. (revised 1990) ... J. Travlos R.C. Anderson ... PD 1299 Horizontal (normal) ... 1960
Heliaia after Hellenistic remodelling ... J. Travlos ... PD 1301 Horizontal (normal) ... 1964
Plan and elevations of the Heliaia ... J. Travlos ... PD 1960 ... 1967
Limestone step block from the Propylon of the "Heliaia" (now identified as the Aiakeion) and reused in the "Contractor's Wall" to the west of the Middle Stoa ... 4160 Horizontal (normal) ... 26 Aug 1961