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| Section of the Great Drain opposite the Eponymous Heroes, interior view ... south 1909 Horizontal (normal) ... August 1967 |
| Section of the Great Drain opposite the Eponymous Heroes, interior view ... north 1910 Horizontal (normal) ... August 1967 |
| Great Drain west of the Eponymous Heroes. Isometric drawing ... W.B. Dinsmoor, Jr ... PD 2286 Horizontal (normal) ... 1974 |
| Cutting for the Great Drain, after clearing, before laying pipe ... south 2172 Horizontal (normal) ... 23 November 1953 |
| Cutting for the Great Drain, after clearing, before laying pipe ... north 2173 Horizontal (normal) ... 23 November 1953 |
| The Great Drain just to the south of the railroad wall ... south 2191 Horizontal (normal) ... 8 March 1955 |
| Middle drain to north of Building C before final clearing. West Branch of the Great Drain showing its two courses ... Publication says from the northeast. southwest 2564 Horizontal (normal) ... 21 May 1938 |
| Middle drain to north of Building C, as cleared ... north 2567 Horizontal (normal) ... 31 May 1938 |
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