Jupiter - King of the Gods Jupiter
Jupiter - Roman God Jupiter
Glossary entry on the king of the gods, Jupiter.
Encyclopedia Mythica article on the head of the Roman gods, Jupiter. Includes a picture of Jupiter.
The Atrium - Golden Threads - Jupiter as Emperor
Classics discussion of the identification of Roman emperors with the god Jupiter. At least one emperor used the image of Jupiter on coins instead of his own.
Varro on Pagan Religion
After explaining the origin of the sky, Varro says that Jupiter comes from the words for day and father, "Diespaiter,"and those who come from Jupiter are known as dei, "deities."