Milk Glass has a large history, from the mid 1800's to present day. One could break it down into it's three era. Pre depression, Depression era, and modern. Early milk glass is the most valueable of course, Lots of milk glass was made and introduced in the Depression era 20's to 40's with moderate value and of cours you can still get it today. If you want to look for special find a good dealer and look for early pressed milk glass. Just be careful with little to no markings to go buy lots of repo's. Then if you wish a good name like Fenton goes a long way with collectors, these are mostly post 40's but with wonderful flair and artistic value. Take a peak around on the net and get a good ideal of what kind of milk glass you are looking for and then go look around at the shops, a little knowledge here will go a long way.