Calculations
A handwritten manuscript page of geometric calculations by James Gregory, dated 1658, held by the Smithsonian Libraries and Archives. Its single picture shows a dense hand-lettered text block in ink on aged paper, with a geometric diagram of curves, straight lines, and lettered points near the top. A designer might draw on its ink-on-paper texture, the crisp hand lettering, and the sweeping curved lines of the diagram as a motif for mathematical or scientific themes.
