In letters written to me during February, March, and April, 1941, Prof. A. J. B. Wace has briefly described and illustrated with small photographs important fresh evidence for the reconstruction of the façade of the Treasury of Atreus, derived from fragments which came to light when the Mycenaean storeroom in the National Museum at Athens was recently cleared and rearranged. The examination and interpretation of these fragments were the joint work of Prof. Wace and the Director of the Museum, Dr. Sp. Marinatos, with whose permission the following account is published. It is closely based upon Prof. Wace's own words, but neither manuscript nor proofs could be submitted to either scholar, and I am responsible for any misunderstandings that it may contain. The phrase ‘B.M. Cat.’ means ‘Catalogue of Sculpture in the Department of Greek and Roman Antiquities of the British Museum, Vol. i, Part i, Prehistoric and Early Greek, by F. N. Pryce, 1928.’