Description based on: v. 4.
v. 1. Background to standardisation and the Pacific classes
v. 2. The 4-6-0 and 2-6-0 classes
v. 3. The tank engine classes
v. 4. The 9F 2-10-0 class
v. 5. The end of an era.
A detailed history of British Railways standard steam locomotives. ISBN 9780901115973. Published by Railway Correspondence and Travel Society in 1994. Publication and catalogue information, links to buy online and reader comments.