One of my treasured possessions is Barri Jones’s Hadrian’s Wall from the Air (Archaeological Surveys Ltd. 1976; 65p). The cover shows Cawfields Crag and hints at the damage sustained to the wall by the development of a quarry. There is a short introduction, followed by a series of black and white aerial shots with a short commentary. The first image is of the Roman fort at South Shields, and the last the fort at Burnswark with the Roman siege works.
The booklet has been updated and revised by David Wooliscroft (Tempus Publishing, 2001; The History Press, 2009). Jones had started to revise his work in the 1990s.
Some of the major changes at sites are clear between the two volumes. Take for example the outline of the fort at Segedunum (p. 5), with the rows of housing, with the clearly defined plan (col. pl. 15). Or compare milecastles 37 and 39 in the two volumes (pp. 16-17; col. pls. 24 and 25).