1. Add MS 15511, f 35 Reference (shelfmark): Add MS 15511, f 35 Title: Sketch of a geyser vent from above Scope & Content: Pencil sketch of a geyser vent. Possibly a preparatory pencil sketch for Add MS 15511, f. 37. Unsigned and undated. Collection Area: Western Manuscripts Languages: English Date Range: 1772 Extent: 1 drawing