I was happy to learn from Charles Darrieu that the famous Bulletin Pyrénées (published by the Musée Pyrénéen in Lourdes) has been digitalized and made available for all of us. There are two links because there are two successive series:

The first one is the “Bulletin Pyrénéen” (1896-1948):
http://gallica.bnf.fr/ark:/12148/cb32732870b/date

The second one is “Pyrénées” (1950-2004):
http://gallica.bnf.fr/ark:/12148/cb32846197s/date.r=bulletin%20pyreneen

Charles is an admirer of the French border-commissioner Jean Sermet (1907-2003) who has written very much about the Pyrenean border and was the ‘leading man’ in many borderrelated issues. He has listed the articles of Sermet in these magazines: 106,104 (1975), 105,106,107,(1976) 109,111,112 (1977), 114,116 (1978), 117,119 (1979), 123 (1980), 130,131,132 (1982), 140 (1984), 183 (1995).