From time to time, I will highlight some helpful texts about ecumenism. The Methodist Church website includes a page about Ecumenical Reading, where you will find more.
Today's book is 'Christ's Body in Corinth' by Yung Suk Kim. This book highlights a way of understanding ecumenism, quite distinct from the traditional full visible unity. His assertion that reconciliation between Christians and unity are incompatible is challenging. I have a review of the book on the Churches Together in England website.