So I don't have any of the aforementioned artists' work yet but I do have a 20x16, signed print of New England Grouse Shooting by William Hardnen Foster. I'm starting to collect and sell SxSs and now sporting art; I know where to sell the guns (Gunsinternational) but wasn't sure where to sell the art. Thanks for your insights and if I come across an Osthaus oil I'll let you know!