Claude Lorrain, in order to avoid repetition…

Claude Lorrain, in order to avoid repetition of subjects, and also to expose the many spurious copies of his works, makes tinted outline drawings (in six paper books prepared for this purpose) of all those pictures sent to different countries; and on the back of each drawing he writes the name of the purchaser.

These volumes he names the Liber Veritatis (Book of Truth).

This valuable work, engraved and published, has always been highly esteemed by students of the art of landscape.