1. Sloane MS 957 Reference (shelfmark): Sloane MS 957 Title: Scope & Content: Jacobus Colius, Ortelianus: Treatise on ciphers: 1584. includes: f. 7 Franciscus Raphelengius, the Younger: Letter to J. Cole: 1598.: Lat. Collection Area: Western Manuscripts Languages: English and Latin Date Range: 1584 Extent: 1 item