This car may have undergone an older restoration or it may be all original, but it should be rust-free and in good mechanical order. It may or may not be running. This vehicle is inoperable, but may be somewhat valuable to owners of the same make and model for spare parts. Once you've narrowed down the type of car to buy, your driving expectations, and the physical and mechanical condition, it's time to begin the serious research. Find out as much as possible about the chosen model.
Libraries have books covering all the different makes and models that have ever been manufactured.
A quick search on the web will bring up clubs that are dedicated to your dream car, as well as articles from various newspapers and magazines around the world. EWA, a major distributor of automotive-related materials, has a web site offering hundreds of magazines, books, videos and models of classic cars from yesteryear as well as today's most popular models.