1. Harley MS 80, ff 85r-98r, ff 98r-98v Reference (shelfmark): Harley MS 80, ff 85r-98r, ff 98r-98v Title: Notes relating to astronomy and the quadrant Scope & Content: Notes relating to astronomy and the quadrant. Collection Area: Western Manuscripts Languages: Latin Date Range: 1375-1424 Extent: 1 folio.