صفر is a user on octodon.social. You can follow them or interact with them if you have an account anywhere in the fediverse.
If you don't, you can sign up here.
'Enter a Digitized Collection of 38,000 Pamphlets & Periodicals From the French Revolution'
http://www.openculture.com/2018/06/enter-digitized-collection-38000-pamphlets-periodicals-french-revolution.html
