Today we see the Borders between Spain and Morocco for the autonomous Spanish city of Melilla, conquered by Spain in 1497. The Archivo Histórico Nacional holds the ‘ ‘Agreement between Spain and Morocco for the establishment of a customs office at the border of Melilla’, signed in Fez on July 31, 1866.
You can consult it on our Portal following this link:
http://www.archivesportaleurope.net/ead-display/-/ead/pl/aicode/ES-28079-AHN9/type/fa/id/ES-28079-AHN-UD-178138/unitid/ES-28079-AHN-UD-178138+-+ES-28079-AHN-UD-1699873/
In the pic: a map of the Melilla fortress in the late 17th century.