The oldest library in Port au Prince collapsed. This is the Bibliothèque Haïtienne des Pères du Saint Esprit. This is located in Saint Martial College.
At least a portion of Haiti's national library has also collapsed.
Many university libraries have collapsed.
The St. Louis de Gonzague Library is weakened structurally but still standing.
This is somewhat bad news for those researching their Haitian roots! The earthquake will rewrite the chapter on doing Haitian genealogical research for generations to come. Let's hope that someone comes up with the funding to digitally preserve what remains of records of interest to future generations of genealogists.