If you go to
www.motionmro.com, the website of Motion Industries, you can search for gears to match your needs. Motion Industries is a distributor, so they can order any of the gears listed on their website and sell them directly to you.
I quickly put in your #35 sprocket with 19teeth and found 10 manufactured sprockets. Martin sprockets is listed as one of the companies that supplies this sprocket, and its part# is 35A19. There are also others made by Martin, Browning, Dodge-Reliance, Boston Gear, and UST Inc. Once on their homepage, click on mechanical>Chain&Sprocket>RollerChainSprocket> and then your specs. Hope this helps.
-Rc