As someone who lives just a few miles from Avebury, I have been reading the extracts with great interest.
I would imagine that Littlestone's intention was to show respect and admiration for Mr Reade's work and he has been very careful to attribute the work to its rightful author.
If you know Mr Reade and the book is still available, I would be very intersted in purchasing a copy. Perhaps the Henge Shop could facilitate.

Best wishes

tjj