University Of Oxford First World War Poetry Digital Archive
Dataset published 2011 via Bodleian Libraries, University of Oxford
Drafted in October-November 1917 at Craiglockhart or in November 1917-January 1918 at Scarborough. Revised at Scarborough in July 1918. This is a revised draft of lines 1-12. This is no. 161 in ed. 'The Complete Poems and Fragments'.