I think you can guess by now that I'm working to document all the movie posters of the Takahata/Miyazaki canon, stretching from Ghibli all the way back to Toei. It's all part of my master plan to have everything under one roof. It's about more than this movie or that movie; it's about 50 years of anime history.
That said, I can think of no better poster to share with you than Japan's very first animated feature - the 1958 Toei Doga movie Hakujaden ("Legend of the White Serpent"). The studio was founded to create feature animation that would rival the world's best. On that front, they succeeded masterfully, and the spirit of Toei Doga lives on today in Studio Ghibli.
Hakujaden was released in the US in a dubbed version under the title, "Panda and the Magic Serpent." It's currently available on YouTube, and one of these days, I'll post it here so you can watch and enjoy. The dub isn't the best, but it is somewhat bearable.