Hi,
For the category "Documentations :: Books" of the Hump
(http://caml.inria.fr/cgi-bin/hump.fr.cgi?sort=0&browse=14)
here are two books *in french* that could perhaps be added:

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Programmation en Caml
  cours et ateliers
      Jacques Rouablé  (Eyrolles)

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Programmation par l'exemple en Caml
  (exemples et problèmes corrigés)
      Louis Gacôgne  (Ellipses)

===============================


(They are not strictly for OCaml, but for Caml Light, but there are very few 
and trivial things that an OCaml user would have to adapt.)
(They are several years old too. Maybe they are not available anymore, 
I've found those in a library, not in a bookshop.)