He has also published a study of Roger Casement's "Black Diaries", which accepted them as genuine.
'Are you related at all to Roger Casement?'
An account of Roger Casement's life and times with a collection of his diaries and public writings.
The British government in 1910 sent the consul-general Roger Casement to investigate.
The Life and death of Roger Casement (1930)
The Ghost of Roger Casement, director and writer, 2002.
The play dramatizes the jury deliberations in the treason trial of Roger Casement.
He was also a loyal friend of Roger Casement.
The younger Bigger was a nephew of Roger Casement.