Jaguar did provide for each model its own spare parts catalogue. Curiosity is that none was similar to the other and they all started from scratch again.
Jaguar E Type 4.2 J 37
Jaguar E Type S2
The S2 spare parts catalogue was in my opinion the most useless of all. They did not have any exploration pictures but just a chapter with longs lists of part numbers.
S3 spare parts catalogue
Probably one of the best spare parts catalogues ever made by Jaguar. This S3 part catalogue is very easy to use and find parts. Probably due to a number of complaints for their S2 part book, it seems a task force has created something really good and handy.