Pyrénées-Orientales on line
Vicinity of Perpignan on eastern border with Spain;
Ancient province of Roussillon.
http://www.cg66.fr/55-les-archives-departementales.htmhttp://www.cg66.fr/55-les-archives-departementales.htm
To be mentionned:
plus Etat civil (1512/1902), military records("registres matricules") and population census ("Recensements de population<1906")
As always 1st pay a look at "tables décennales"
(ten years index city per city)