Following links give you suppliers providing this transistorWhy dont you go to some supplier site like digikey and search for bjts?
If you will go any of those supplier site you can choose the transistor by choosing the appropriate parameters. I specially like Digikey due to their excellent search tool and data base.Following links give you suppliers providing this transistor
Find 2N3866 Stock and Compare Prices Across the Most Reputable Distributors in the Industry.