Explore Your Archive is a joint campaign delivered by The National Archives and the Archives and Records Association across Ireland and the UK.
The campaign runs from November 19 to November 27 and each day has a different hashtag.
#hairyarchives is today's hashtag.
The campaign states: "In line with the tradition of Movember, share hair related items and stories from your collections!"
The campaign aims to encourage the organisers and people who look after archive collections to take to Twitter to share gems from their collections.
The Folklore Archive of UCD shared Duchas' especially interesting item from Cork, detailing how children used to make sliotars from animal hair.
The RTE Archives shared a Newsbeat report broadcast from 1971, that covers the story of boys from Naas who were refused entry to a dance because of their long hair.
"Sorry lads. You can't get in. Your hair is too long."
The Archive Editor of The Times, Rose Wild, shared a letter to the editor from 1897, which advises that a man with a long beard never looks well in a top hat. Good to know.
Wild also shared a report from 1921 about "hairy murderers" or "abominable snow-men".
The University of Cambridge's third plague pandemic researchers shared a Trove Australia news clipping. The item provides details on plague spreading hair from China in 1911.
RCN Libraries shared a picture of a lock of Florence Nightingale's hair encased in an engraved locket.
The Roald Dahl Museum shared an excerpt from Dahl's notes. "... in the end, the Hairy-Green-Caterpillar becomes and Advertising Manager for a company that makes hair-restorer."
Duchas shared a riddle. "Hairy in and hairy out, hairy into hairy's mouth?" The answer can be found here.
The campaign has been a huge success, especially today, as #hairyarchives has been trending on Twitter in Ireland. The weird, wonderful and captivating all feature in this treasure-trove of archive material.
Do you have anything to share with us from your #hairyarchives? (hehe)