A notable collection of old etchings, portraits, cartoons, illustrations, and old volumes of Voltaire are now in the display cases of the Treasure Room in Widener Library. The majority of the volumes on exhibition were loaned to the Library for display by Professor Andre Morize, Associate Professor of French Literature in the University.

One interesting feature of the exhibition is an original pen and ink sketch of Voltaire, made at Ferney about 1767 by the Swiss printer Huber. There are also two views of Ferney whcih were formerly the personal property of Wagniere, Voltaire's private secretary.

There are also several autographed letters and manuseripts, which have never been published, with Voltaire's corrections, some original editions of several works, including Candide, some rare engravings, and the portrait in color engraved by Alix.