Junction of the southwest annex with the southwest corner of the main building. View after stripping of orthostates in the south wall of the annex ... southwest 4291 Horizontal (normal) ... 21 Jul 1966
Κ-21 4290, 4291 Κ 3720 P 27556 84-600 84-601 ... 21 July 1966
Notes ... H.Α. Thompson ... 4101 4300 ... 1961, 1965, 1966