Lowe, W. H. M., De Courcy-Wheeler, H. E., Portal, B. P., Blackburne, C. H., & Great Britain. Army. (1916). Typescript copy of order to Colonel B. P. Portal, D.S.C., Commanding Mobile Column, dictated to Captain Henry de Courcy-Wheeler by Major-General W. H. M. Lowe, and signed by Major C. H. Blackburne, ordering Portal to maintain the cordon around the area he has captured.

Lowe, William Henry Muir, et al. Typescript Copy of Order to Colonel B. P. Portal, D.S.C., Commanding Mobile Column, Dictated to Captain Henry De Courcy-Wheeler by Major-General W. H. M. Lowe, and Signed by Major C. H. Blackburne, Ordering Portal to Maintain the Cordon Around the Area He Has Captured. 1916.