Twitter corpus for Sentiment Analysis from a class (cs224n)at Stanford.
Class page:
https://sites.google.com/site/twittersentimenthelp/for-researchers#Where_is_the_Tweet_corpus_8553
http://www.stanford.edu/~alecmgo/cs224n
A. Zehe, M. Becker, F. Jannidis, and A. Hotho. Joint German/Austrian Conference on Artificial Intelligence (Künstliche Intelligenz), page 387--394. Springer, (2017)