You can filter article history by user [1] to check whether their contributions are still in the current version, or use Wikiblame creatively to find who wrote

You can filter article history by user [1] to check whether their contributions are still in the current version, or use Wikiblame creatively to find who wrote some specific part of a live article [2]. [1] https://tools.wmflabs.org/sigma/usersearch.py https://tools.wmflabs.org/sigma/usersearch.py [2] https://en.wikipedia.org/wiki/Wikipedia:WikiBlame https://en.wikipedia.org/wiki/Wikipedia:WikiBlame http://wikipedia.ramselehof.de/wikiblame.php http://wikipedia.ramselehof.de/wikiblame.php