21. University of Pennsylvania, LJS 488 Title: Summa de arithmetica, geometria, proportioni et proportionalità Author: Luca Pacioli Place: Venice Date: [after 1494]
22. University of Pennsylvania, Oversize LJS 496 Title: Treatise on practical mathematical calculation Place: Italy Date: [between 1475 and 1499]
23. University of Pennsylvania, LJS 59 Title: Dogale Author: Leonardo Loredan Place: Venice Date: 1517.
29. University of Pennsylvania, Misc Mss Box 1 Folder 27 Title: Miscellany Author: Francesco Armellini Pantalassi de' Medici Date: 1521.
30. University of Pennsylvania, Misc Mss Box 1 Folder 31 Title: Miscellany Author: Wool Guild Date: 1552, n.d.