Mr. Castle portraying Bolingbroke in 1987 with the English Shakespeare Company as shown in the book The English Shakespeare Company: The Story of 'The War of The Roses', 1986-1989 (copyright 1990, ISBN 1-85459-043-X)
Picture of John Castle in front of Mt. Fuji, 1986 or 1987 from the same book.
Portrait of the whole company from the same book - John Castle is sitting cross-legged on the ground between the "S" of WARS and the "O" of OF.
Pages from the book with content about John Castle:
Review of Mr. Castle portraying Bolingbroke from "The Plantagents in Chicago", Shakespeare Quarterly, Vol. 39, No. 4, Winter 1988, full review pgs 495-500.
Press photo for the tour (Mr. Castle is in his Bolingbroke costume.)