Your office should keep enough phone books for the entire geographic service area convenient to everyone's work station. All staff should be encouraged to use the books, rather than telephone information services. Information is an expensive call. Used several times a day by a number of people, the charges can add up. Train staff to call the operator to request a credit for a long distance wrong number.
Paper is the fuel law firms consume.
However, most law firms can cut down on their paper consumption. The biggest demand for copies comes from repetitive revisions. Try to be thoughtful in your revisions. Make all the revisions you are likely to make at one time. If you are reviewing others' work, it should not always be necessary to review a pristine work product.