The excavations of the Metropolitan Museum of Art at Asasif (Deir el-Bahri) in 1922-1923/1926-1927 are unpublished. But see The Museum's Excavations at Thebes Part 2: The Egyptian Expedition 1922-1923 (Dec., 1923), Herbert E. Winlock, The Metropolitan Museum of Art Bulletin, Vol. 18, No. 12, pp. 11-39, for a general description.
Tomb MMA 508 belonged to Khety.