The Manorial Documents Register (MDR) is the official index to English and Welsh manorial records and provides brief descriptions of documents and details of their locations in public and private hands. The National Archives at Kew now provide online access to this resource. Manorial documents include court rolls, surveys, maps, terriers, documents and books of every description relating to the boundaries, franchises, wastes, customs or courts of a manor.

British History Online provides a digital version of "A history of the County of Kent: volume 2", originally published in 1926. This volume deals with the religious houses of Kent, including accounts of the early history of Canterbury and Rochester cathedrals.

I came across this video (slightly dated) on the weekend where the London and Surrey 'Earth Mysteries' groups have a day trip around some of the Kentish prehistoric sites.

The National Archives are making digital records available on their website free of charge for as long as our Kew site is closed to visitors. Registered users will be able to order and download up to ten items at a time, to a maximum of 50 items over 30 days. The limits are there to try and help manage the demand for content and ensure the availability of our digital services for everyone.

In response to the challenges created by the global public health crisis of COVID-19, Project MUSE is pleased to support its participating publishers in making scholarly content temporarily available for free on our platform. With many higher education institutions moving into an exclusively online learning environment for the foreseeable future, we hope that easy access to vetted research in the humanities and social sciences, from a variety of distinguished university presses, societies, and related not-for-profit publishers, will help to support teaching, learning, and knowledge discovery for users worldwide.