Looking for free online repair manual for 1951 lincoln cosmopolitan and a site to purchase an ignition switch?

My Dad and I just purchased a `51 Lincoln Cosmo fully intact and running, but needs a few parts like a fuel filter, ignition switch because the keys were lost and would like to know if there is a place to download free repair manuals and I`m looking every where for the ignition switch with no luck so I`m turning it over to the Yahoo Community for help. Thanks to any one in advance how can give me any guidance in these issues.