Through apost by Catherine Hofmann on the blog Cartes et figures du monde we learned about the recent disappearance of Monique Pelletier, who was director of the département des Cartes et plans of the Bibliothèque nationale de France.

For a biographical review you can check their entry in wikipedia.

As a legacy he leaves us an enormous research work, especially focused on the history of the first French topographic cartography and that produced by the family of French astronomers and cartographers Cassini. 

A good example is the publication Tours et contours de la Terre : Itinéraires d’une femme au cœur de la cartographie, 1999, which contains a series of his articles at the time of his retirement.