“...On the topographical and geological results of a reconnaissance-survey of Gebel Garra and the oasis...”

“...Egypt in the classical geographers/ by John Ball. Ministry of Finance, Egypt, Survey of Egypt...”

“...The geography and geology of south-eastern Egypt/ by John Ball. Ministry of Finance, Egypt, Survey...”

“...A description of the First or Aswan Cataract of the Nile/ by John Ball. Ministry of Finance, Survey...”

“...Baharia Oasis: its topography and geology/ by John Ball and Hugh J. L. Beadnell. Survey Department...”