At Easter this year I visited the Aviation Heritage Center at Omaka in Blenheim , New Zealand and took some photos which may be suitable for adding to the WWI website. I have attached some photos of the DH4 aircraft which the museum describes as "American-built and one of only two originals left in the world". It is in the markings of Chief of the Army Air Service, Maj Gen MM Patrick the position he held until his retirement in 1927.