hello:
i'm sending a book to a friend's father and need some help writing a quick letter pa-russki. can someone translate:

Dear Mr. Petrov:

Your son, Boris, asked me to send you this book, The Immigrants, which he found among some old books here at the office.

I hope you enjoy it!

Best wishes,
Nina


I would greatly appreciate help with this!!! I just forget what the correct word for 'send' is, or how to sign off at the end of a letter warmly, but not too informally, etc.

Thanks...