"The item(s) you requested or a bibliographer identified on your behalf are now available at the location(s) shown below."

I got that in an email today from the library and parsed it as meaning "Either the items you requested ... or a bibliographer (who was identified on your behalf) are now available." So i would go down to the library and pick up either a book from interlibrary loan or my own personal bibliographer. Obviously it means "The items that you requested, or that a bibliographer found for you based on such are request, are now available." Even when I know what it's supposed to mean I still see it as "a bibliographer identified" rather than as "the item ... a bibliographer identified."