1951 was the year of the Standard Steam Locomotive. The Railway Magazine of the time focussed on the development of these locos. Rather than just looking backwards to those days, it is good to listen to and read things from the perspective of the time! http://rogerfarnworth.com/2019/07/08/british-standard-steam-locomotives
A most interest report Roger and I suspect those loco outline drawings will be helpful to modellers too. Thanks for posting.