Wonderful
An excellent overview of the whole history of the Berkshire locos. A great selection of photos (B&W but a few in color at the end). Not very much about the operation of the NKP, but a good explanation of how the locos were developed over time. Brief details of the changes between sub-types plus order numbers and delivery/disposal dates of each loco. Would not be unhappy if this was my only book about them.
