View of the drain after the removal of one pair of drain tiles ... north 2150 Horizontal (normal) ... 17 Mar 1959
View of a narrow parapet slab ... Horizontal (normal) ... 1954
View of a broad parapet slab ... Horizontal (normal) ... 1947
View of the back wall ... south 3300 Horizontal (normal) ... 27 Jul 1961
Deep central basin: detail of the northwest corner, showing outlet pipe ... northwest 3304 Horizontal (normal) ... 27 Jul 1961
View of the deep central basin, showing trace of overflow pipe ... south 3302 Horizontal (normal) ... 18 Jul 1961