I have to agree with @RumpusRoom. I feel like this article could have gone a lot more in-depth and could have done more to explain how the slang evolved versus simply listing a few slang words from each decade. I also feel that the article as a whole would have flowed better without the added headings for each decade, since each one only contains a single sentence. That said, I do feel like you did your research and all that. Though some of these words I feel might be older than you listed, I don't know for sure and won't point out something I could very well be incorrect about, lol.
"Hipster" actually originated far before the 1950's, and was inspired by black jazz musicians of the Harlem Renaissance. The white kids who were intrigued by the music and the scene reappropriated the term "hepcat" and used it themselves. It evolved into the word 'hipster". Here's a great [url=www.npr.org/blogs/codeswitch/2013/12/06/249275784/dont-you-dare-call-me-a-hipster-i-sir-am-a-hep-cat]article[/url] on it.
Slang is also different depending on country. In Australia slang has evolved.
My generation doesn't use the term Sheila (woman) or galah (as in you silly galah, or fool) but my parents did.
Depending on which state we live in slang is also different.
In Western Australia we call red heads, "rangas" as in short for orangutan. Over east they call them gingers (same as in the UK?). In the past they would call redheads, Bluey.
DTs are swimmers for boys. (As in d**k togs) or we call them speedos after one of the brands.
In north Queensland, bag racks in school were called "port" racks.
And then in Australia we also have rhyming slang (not sure if this is a thing elsewhere). For example, a Joey Blake = snake.
This is such a cool article! I never really realized how much the English "slang language" has changed. I have no idea what people will be saying in 50 years from now, and I'll be 65 when I find out! :)