Sri Yantra
The art, geometry and construction of Sri Yantra and its connection with Indian classical music.
http://alumni.cse.ucsc.edu/~mikel/sriyantra/sriyantra.html

RajaRajeswari Peetam
An organization based in New York publishing a bi-monthly magazine on Sri Vidya. Archives include articles on Sri Vidya, sri yantra, mantras, and Sanskrit hymns.
http://www.srividya.org

Sri Yantra: June Moon gallery
Seven images of Sri Yantra. Click on icons to see larger images and descriptions.
http://www.junemoon.com/gallery/room8.html

Sri Vidya: Bibliography
A Bibliography of books on Sri Vidya.
http://www.meaus.com/Sri_Vidya_-_Bibliography.html

Shri Vidya
The doctrine, history and symbols of Sri Vidya.
http://philtar.ucsm.ac.uk/encyclopedia/hindu/devot/shrivi.html