Calendars provide summaries full enough, for most purposes, to replace the original documents. These summaries are printed in chronological order and do not necessarily reflect the archival ordering of the documents (hence ‘calendar’). They are the primary finding aid for the records that they describe. This series details writs, indictments, recognizances, orders and memoranda from the sessions books for Middlesex for the period 1550-1688. Sessions were held in all counties before Justices of the Peace, for the investigation of judicial and administrative concerns.