Section plan of area Δ in 1932 ... Charles S. Spector ... f Fragile Graph Paper Drafting Ink Pencil ... 1932 ... Δ
Plan of section Δ in 1932, showing little or nothing additional ... Charles S. Spector ... Filed with PD 541-2 f Fragile Graph Paper Pencil ... 1932 ... Δ
Plan of section Δ in 1932; southeast corner ... Charles S. Spector ... f Fragile ... 1932 ... Δ