Rangers of the North: The Kingdom of Arthedain is a source book for use with the Middle Earth Role Playing Game (MERP).
This source book contains a mountain of information on the people and area of Arthedain, as well as many adjoining regions. It covers Arthedain in it's fight against the Witch King of Angmar, as well as the areas of Bree, the Shire, the North Downs, the Gray Havens, and many more. As well as copious notes on the people and cultures who call these places home. There are stats for people of note, including Aragorn, and there are layouts and maps of sites of interest.
Rangers of the North also includes a set of 6 ready-to-run adventures, covering different periods, including the Fourth Age. As well as a set of adventure ideas.