1
general::
Also, one for the book. An outstanding or unusual achievement or event, as in All of the main awards went to one picture? that's one for the books. This expression originally alluded to record books kept for sports but soon was applied to other endeavors. [Colloquial; c. 1900]
American Heritage Idioms
2
general::
Phrase(s): one for the (record) books
a record-breaking or very remarkable act. • What a dive! That’s one for the record books. • I’ve never heard such a funny joke. That’s really one for the books.
McGrawhill's American Idioms And Phrasal Verbs