Thank you for the suggestions. I'm quite reticent to buy books that are as old as these: - Lawrence Workbook is 20 years old. - Hardy 2/1 book is 18 years old. I think Bridge Game is evoluating faster than this... Maybe I'm wrong and these books are still uptodate to the 2/1 standard... Standard bridge bidding for the 21st Century could be great... Is it a 2/1 book or a more general book on 5th card major bidding? Any other suggestions?