1. MS Facsimile 583 Reference (shelfmark): MS Facsimile 583 Title: Sir Isaac Newton: De Mundi Systemate Praelectiones 5 Scope & Content: Photostats (positive) of manuscripts of Newton's lectures on September 29 1687 and following days. Folios 25. See E. Weil sale-cat. 27, no. 152 and sale-cat. 29, no. 125. Collection Area: Western Manuscripts Languages: English Date Range: 20th century Extent: 1 item