Map of area Celerico-Castel Rodrigo-Guidad Rodrigo, centred on Almeida, Zamora province, NW Spain. [Copy 6.], n.d., Adv.MS.46.10.1(28F). Correspondence and papers of General Sir George Murray., Adv.MSS.46.1.1-46.10.2. National Library of Scotland Archives and Manuscripts Division. https://nlssb.as.atlas-sys.com/repositories/2/archival_objects/68032 Accessed September 23, 2024.