Section Ω, Sketch ... Dirty Diazotype Printing Ink Pencil
Section Ω ... Faint Dirty Faded Diazotype Printing Ink Pencil Colored Pencil
Drawing of volutes from Block A 2973 ... Volute spiral constructions. 4 sheets of Drafting Film joint together. Dirty Drafting Film Drafting Ink Pencil ... 1994