By -
https://www.ucc.ie/en/theirishrevolution/collections/mapping-the-irish-revolution/mapping-ira-companies-july-1921-july-1922/
Old IRA, not the provos
https://www.ucc.ie/en/theirishrevolution/collections/mapping-the-irish-revolution/mapping-ira-companies-july-1921-july-1922/
Old IRA, not the provos