Upon further searching, I find few bits of information about William Strutt or his print "Peace". I only find others with questions. The basic information is: PEACE - (Isiah XI.6.)" William Strutt, Gravure Hanfstaengl, Copyright 1896 by Franz Hanfstaengl., Printed in Munich., Franz Hanfstaengl, Munich, London, New York
Beyond that, the explanation of the picture is that it is a pictorial representation coming from Isaiah 11:6. The man in the back of the picture who is being whispered to by an angel is Isaiah himself receiving the vision to record.
Unfortunately I find nothing else at this time.