Letters on joint surfaces of columns and Masons' marks on column faces of Middle Stoa ... Helen Besi ... Dirty Heavy Tracing Paper Drafting Ink ... 1965
Key plan of location of Masons' marks at the east end of Middle Stoa ... Helen Besi ... Fragile Torn Dirty Repaired Heavy Tracing Paper Drafting Ink ... 1966
Masons' marks on Crepidoma and Euthenteria of East End of Middle Stoa ... Helen Besi ... Second version (also A-2433). Dirty Heavy Tracing Paper Drafting Ink ... 1966