I'm wondering if anyone here can "steer" me in the right direction... I'm looking for two things... I am in the business of buying and selling and need help in the art department... 1st: I have come into the possession of some art supplies, I'm wondering their value and use, or if they are obsolete because I can't really find them online? One being WINSOR & NEWTON Double Mastic? And some "Strong Drying Oil No. 1"? < and should this be somewhat coagulated? The 2nd request is for a website or group I can join for Artists and collector's to help me identify art? More often than not, I can't make out the names to research value... PLEASE HELP!!! THANK YOU in advance!