The preface to the directory mentions that it covers the counties of Berkshire, Buckinghamshire and Oxfordshire but the copy used had been published, by Kelly's, as Berkshire only.
As with so many of these directories, the map published with the original is missing.
The directory contains: Indexes; Berkshire Facts; Towns and Villages Directory; Court Directory; Trades Directory; Advertisements. Some of the scanned pages/typesetting appear not to be straight.
This is a feature of the original book rather than the scanning process.