eB E-book Thomas, Anabel The Art and Government Service of Francesco di Bartolomeo Alfei (c. 1421 - c. 1495) : Visual Propaganda and Undercover Agency for the Republic of Siena PDF 2023 - Amsterdam university press
eB E-book Thomas, Anabel Garrisoning the Borderlands of Medieval Siena : Sant'Angelo in Colle: Frontier Castle under the Government of the Nine (1287–1355) PDF 2016 - Routledge Ltd