Photograph shows the conditions of the area and the work of removing the tongue. From 58/Λ looking northeast ... Scanned 2005 for the 75th anniversary exhibition and publication. 87 Horizontal (normal) ... 11 Feb 1932
Δ-1 87, 88 Δ 67 P 202 Δ 81 P 206 Section Δ 49 ... 11 Feb 1932
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