Following a hunch that the Beyer Peacock record would be retained at the Museum of Science and Industy in Manchester, I found the following images. I am afraid I cannot show pics owing to copyright.
There are 2698 documents in their archive and I suspect it's a rich seam of research on E&W/S&MJR locomotive matters. Now can I persuade my boss to give me a week in Manchester?
OK That is all the photo's - you know how it is once you start you cannot stop. The Beyer Peacock order books still exist and the company directors minute books too.