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PD 2286 (DA 4232)

Isometric drawing of the Great Drain west of Eponymous Heroes ... W.B. Dinsmoor, Jr ... 87-533 87-533 Dirty Heavy Tracing Paper Drafting Ink ... 1974

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PD 2286 (DA 4233)

Isometric drawing of the Great Drain west of Eponymous Heroes ... W.B. Dinsmoor, Jr ... 87-533 87-533 ... 1974

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PD 861-a (DA 91)

Working plans of section Ζ in 1954. Earlier periods ... John Travlos Dorothy Burr Thompson ... Original missing. Old grid. Not an accurate plan! Faint Diazotype Drafting Ink Pencil Pen ... 1954

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PD 861-a (DA 92)

Working plans of section Ζ in 1954. Earlier periods ... John Travlos Dorothy Burr Thompson ... 1954