RE:
"Once located, the drawings must be carefully unrolled and scanned. These sixty-plus year old documents are very fragile and frequently have deteriorated, making it difficult to get a readable scan: but new technology and repeated practice has made this process much easier."
I suspect that the writer of this article is being overly dramatic..
I have large numbers of unfaded,original aviation factory drawings, blueprints (some being 12 feet long.)reports, documents, photos and archival records that are 60 (up to 100 years old!) years old, that are in good condition and not fragile to handle.