Comment by skybrian

It’s unclear whether ISBNdb will scan books without ISBN’s, which were invented in the late 1960’s. Customers appear to be ordering books to be scanned by ISBN? Here is one book seller’s experience:

> Bulk purchases also usually reflect interest in a specific topic, whereas the recent, very large purchases were of books that had little in common, except for the fact that they all had ISBNs. This seller also sells rare books that do not have ISBNs, and none of those were part of the bulk purchases.

Article is paywalled, but I saved a few quotes here:

https://skybrian-links.exe.xyz/post/1026