indirect speech

[TomStudy]

Dear teacher,

Please show me which tense should I use when I turn this complex sentence into indirect speech.

The library has some new books.
those books are very useful.

1) He told me that the library had some new books which are very useful.
2) He told me that the library had some new books which were very useful.

Thanks


TomStudy

[Alan]

Strictly speaking, the second. However, the first would be readily accepted by many speakers.