» A brief history of the Treasury
   An official history of the Treasury.
   http://www.hm-treasury.gov.uk/about/about_history/about_history_history.cfm

» Dialogue Concerning the Exchequer
   A late twelfth century essay concerning all that went on at the bi-yearly meetings of the medieval exchequer officials, and branches out into a description of all the sources of revenue of the English crown, and of the methods of collecting them. From the
   http://www.fordham.edu/halsall/source/excheq1.html

» English Finance
   Entry from the 1911 Encyclopaedia Brittanica. Courtesy of the LoveToKnow Corporation.
   http://www.1911encyclopedia.org/English_Finance

» Taxation: A Brief history
   The Inland Revenue's history of Income Tax.
   http://www.inlandrevenue.gov.uk/history/

» The National Archives: Taxation Records Before 1689
   This research guide to official records of medieval and early-modern taxation includes a history of lay and clerical taxes in England and Wales.
   http://www.catalogue.nationalarchives.gov.uk/RdLeaflet.asp?sLeafletID=226

» The Taxatio Database
   A database containing the valuation, plus related details, of the English and Welsh parish churches and prebends listed in the ecclesiastical taxation assessment of 1291-2.
   http://www.hrionline.ac.uk/taxatio/