This French magazine on the Pyrenees – with a literary style & design – published in 2006 an edition on the border aspects of the Pyrenees. Charles Darrieu told me about it and helped me to receive it. Bibliographic data:
Les feuilles du Pin à Crochets numéro 7 – Pyrenées frontières
Pau : Éditions du pin à crochets, 2006. – ISBN 2-911715-32-2 (website: http://www.editionspinacrochets.com)
It contains 7 articles on a variety of Pyrenean border issues and is illustrated by lots of b&w pictures, including old pictures of borderpasses.
One of the articles has a link with a previous post on this blog. It’s about a ‘disputed’ triangular area between the summit of le Grand Batchimale (or Pic Schrader) and the borderpass with the original bm330. That borderpass was originally named Port de Clarabide but nowadays is shown on the maps as Port d’Agues-Tortes. The current Port de Clarabide is a few kilometers to the east.
The article shows lot of map-samples from over the years and also on older maps we see usually the name Port d’Agues-Tortes or similar. Only a few give it the name ‘Port de Clarabide’.
Which means: “in search of the bordermarkers”. I just received this book, mentioned in the previous post. I already learned that the Darrieu-couple are friends of Javier and María-Jesús Sancho-Esnaola. They assembled 6 volumes of information and pictures on the esfr-bordermarkers. That makes one jealous!
An unexpected google-find: a Spanish couple who has searched and photographed every bordermarker on the esfr-border. See this 
