Links to some of my other related websites — as well as other notable websites and resources relevant to art materials and media:

Plein Air Painting
    www.pleinairpainting.com

    My paintings & drawings (with a list of links to the Hensche-Hawthorne approach to color)

Camille Przewodek
    www.przewodek.com

    My wife (who paints in, and teaches, the Hensche-Hawthorne color approach)

Art Materials Information and Education Network—AMIEN
    Formerly www.amien.org

    Up-to-date, accurate, and unbiased scientific information about artists’ materials

This site is no longer active due to the death of its founder Mark Gottsegen — http://www.rfpaints.com/blog/item/428-mark-david-gottsegen-1948-2013

Archives of the site, including very thorough list of links, are available here:  https://web.archive.org/web/20120723093659/http://www.amien.org/links.php

Natural Pigments
    http://www.naturalpigments.com

    Manufacturer and distributor of rare and hard-to-find materials for fine artists, good info on artists' materials that were used in historical painting since pre-historic times up to and including the nineteenth century

Eco-Friendly Painting Resource Guide
    http://victoriapaintworks.ca/eco-friendly-painting-guide/ 
    History, plus health and environmental impact, of paint on the walls of your home

WebExhibits.org — Pigments through the Ages (et al)
    www.webexhibits.org/pigments

    Interestingly presented information on color, science and art

ColourLex
    http://colourlex.com/ — modern and comprehensive website with the same subject of pigments and their use in painting, centered around the common ground between science and art

Please send suggested links to dalea@sonic.net