Forum Romanum
Outlines of Roman History: Etruscan Kings of Rome: Traditions of the Later Kings
This article gives a description of the important later Etruscan kings. The history is still based on legend, but the influence of the Etruscan people can be seen in the development of Rome.
Forum Romanum
Outlines of Roman History: Reorganization of the Kingdom
This chapter in William Morey's 1901 textbook discusses the roforms made by the Etruscan kings and the introduction of the tension between Roman patricians and plebeians.
Yale University
Avalon Project at Yale Law School: Laws of the Kings, 753 510 Bc
An comprehensive listing of the Laws of the Kings, the laws set down by the seven kings of Rome during the monarchy.