There are places that are well versed in Prewar Standard Gauge to replace the missing parts on the locomotive, it will probably need rewired as the rubber insulation on the wires was not vulcanized so it crumbles with age. The bent platform on the caboose should be able to be straightened with some thumb pressure, then the roof(which is sitting on top of a gondola) can go back on. Anything with lights will probably need rewired and maybe new bulbs. Try calling Hennings Trains as they seem to have a great repair dept. Best to let a pro bring the old set back up to snuff so it can run safely again. Many times the wheels on the engine have swelled from zinc pest and will need replaced as well. Looks like a great set to get redone mechanically, polish up the original paint and enjoy. AD