Documents about the Lines of Torres Vedras
- The Lines of Torres Vedras. This article was written by Colonel (Retired) Gerald Napier and published in Royal Engineers Journal in December 2008.
- British Use of Telegraphs during the Peninsular War (including the Lines of Torres Vedras). This article was written by Dr Mark S Thompson and published in the Royal Engineers Journal in December 2016.
- Details of the preservation order placed on the Lines by the Portuguese Government March 2018 (Large document 35MB). The document includes plans of all the areas which are now protected which includes forts, roads and escarpments.