The Constellations and Their Stars: Leo
Hyperlinked guide to the stars and messier objects of Leo, as well as information on its position in the sky.
www.astro.wisc.edu/~dolan/constellations/constellations/Leo.html
Leo: A Constellation of Spring
Gary Madison's guide to the stars and spiral galaxies to observe in the Leo constellation. The guide includes a printable chart of Leo as well as photographs of some of the more notable celestial objects with in it.
www.pacificsites.com/~hakuna/leo.html
Constellations Pocket Guide: Leo
Images, mythology, and notes on the constellation's double and variable stars.
www.dibonsmith.com/leo_con.htm
The Dome of the Sky: Leo
Illustration, as well as the mythological story behind constellation named for the Nemean Lion.
einstein.stcloudstate.edu/Dome/constellns/leo.html