This has been in progress for about a week, and is substantially done, at least to my local box. Some of that time was the Internet outage. Will next copy to the /media/datarefuge/ directory specified above.
There are a few .odg files and PDFs which refuse to download, according to error reports and logs, because of permissions problems on the remotes. I am accepting these as lost, despite trying to get them several ways. The download log file, long as it is, records the history of these attempts and could be used to reconstruct.