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| Plan, section, and elevation of the Tile Standard ... G. P. Stevens ... PD 1747 ... 1949 ... Plan, section, and elevation of the Tile Standard. |
| Plan, section, and elevation of the Tile Standard ... G. P. Stevens ... PD 1747 AMS Horizontal (normal) ... 1949 ... Plan, section, and elevation of the Tile Standard. |
| Plan of Section ΒΕ ... Horizontal (normal) ... Summer 2000 ... Plan of Section ΒΕ. |
| Final cutting for the monument base. Cf. plan, nb. pp. 5008-5009 ... see plan, notebook section S, pp. 5008-5009 for old grid references. southeast 4767 Horizontal (normal) ... 23 Jul 1951 ... see plan, notebook section S, pp. 5008-5009 for old grid references. |
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