In 2006 the Ulster Historical Foundation was commissioned by the Presbyterian Historical Society of Ireland (PHSI) to help it develop a website that would provide information about the Society. Part of the project was also to make available online a digitised version of A History of Congregations. This had been published in 1982 as A History of Congregations in the Presbyterian Church in Ireland, 1610-1982. It included brief accounts of over 600 congregations. In 1996, in association with the Ulster Historical Foundation, A supplement of additions, emendations and corrections with an index was published.