John I did not interpret that as a statement of an offer to send a backup. More like-- I bet they would like a backup.
I back up everything and have backups of backups. Better safe than sorry.
I found the site a handy reference to Prewar trains as there is not much out there on that subject. I bought a of copy of the Olsens CD but it does not open on my current MacOS. Lucky I also have one of their books but not all of them as I thought the CD would suffice.