All the sets of 21 Taras, mentioned previously, are based on an 11th century text, of which there are quite a few translations. See Sherab and Amitabha ("The Practice of Tara" link). A full version of the Praises and Requests to the 21 Taras can be found at the Osel Shen Phen Ling site and in Alan Clewley's pages. A particularly thorough explanation of the Praises is on Lam Rim Bristol's Tara Puja page. Jassmine's Tara page has a simplified list of the 21 Taras and a good bibliography. An excellent reference is the Maitreya Project.

2. Homage to you, Tara, whose face is like
One hundred full autumn moons gathered together,
Blazing with the expanding light
Of a thousand constellations.