Links Economic History Economic History Association Economic History Society Broadstreet Blog Medieval Data Sources English Medieval Crop Yields Database The Gazetteer of English Markets and Fairs England’s Immigrants (1330-1550) “The Peerage” Noble Network data The English Chancery Rolls Domesday Book Help in R GIS “Geocomputation with R” by Lovelace, Nowosad, & Muenchow Network Analysis igraph package Yunran Chen’s Tutorial Web scraping Tutorial by Alex Cardazzi