Section Ω from the roof of House 639/17 in Section Φ. In center, Section Ω. At left: part of Section Ψ. In foreground: part of Section Φ. Lower right: part of Section Χ ... southeast Horizontal (normal) ... 20 Jan 1938
Ω-1 18, 19 XII-40 XII-39
House 639/17 ... Ψ-1 102, 103 XII-40 XII-39 ... 20 Jan 1938
Mixed ... E. Vanderpool ... 1 196 ... 24 January 1938- 19 February 1938
Mixed ... M. Crosby ... 1 198 ... 1937-1938