From this page you can browse articles translated and published online by English or French title, category of knowledge, or both. You can also browse all of the plates (whether or not the accompanying text has been translated) by English or French title. Also see auxiliary material such as the Map of the System of Human Knowledge.

Tître Title
Ukraine Ukraine
Ulysse Ulysses
Unguis Basal claw
Unigenitus, constitution Unigenitus, constitution
Unitaires Unitarians
Univers Universe
Université University
Usé Exhausted (soil)
Usurpation Usurpation
Usurpation Usurpation
Uterus Uterus
Uzerche Uzerche