Excavation Notebook for 1921-1922 complied by C. A. Boëthius for Chamber Tombs 508, 509, 510, 506, 507 511, 512. Sketch plans and sketches of finds and tombs throughout. Index page at the front, a further index is available in Boëthius IV.
Dates are given but without a year, Boëthius was present in Mycenae during the excavation seasons of 1921 and 1922.