The most common and popular colors produced were light to medium green, pink, and amber (usually a light yellow-amber), along with clear glass.
Colors that were made in lesser quantities, and thus are harder to find, include amethyst, true yellow (canary), cobalt blue, opaque black (may appear intense purple when held to the light), jadeite (an opaque or translucent green), white milkglass, and red. For a webpage that illustrates many of the known patterns of Depression Glass, check out page on Depression Glass Patterns .
“Depression glass” is a term that is sometimes bandied about indiscriminately by glass collectors, and sometimes incorrectly.
Some manufacturers continued to make the most popular glass patterns after World War II, or introduced similar patterns, which are also collectible. For more information on Depression glass, there are several websites online.
Another category of “Depression era” glass, usually handmade with more care and thus higher quality, is more accurately labeled “Elegant Glass”, as produced by such companies as Westmoreland Glass Company, Imperial Glass Company, Fostoria Glass Company, A. For example, you might try the home page of the National Depression Glass Association here .
As far as reference books, often available at local libraries or at bookstores, as well as available for purchase online, every serious collector of Depression Glass would greatly benefit from obtaining and studying copies of “” (1974), written by noted collector, author and researcher Hazel Marie Weatherman.
The books have been widely reprinted since the 1970s, and are chock full of great background information and photos– describing many patterns and pieces, and including reprints of various glass catalog pages, info on glass companies of that era, etc.
Also, I would strongly recommend the “” series of books by Gene and Cathy Florence.