1950talen

Could you provide a bit more context for 1950talen? Is it a real project, publication, dataset, or a fictional term? Any details about what it refers to (for example, a language collection, a historical study, a region, or an institution) will help me write a precise, neutral wiki-style article under 300 words. If you’d like, I can also draft a generic encyclopedia-style entry assuming it denotes a linguistic project or collection from around the year 1950.