Take time to learn more about forest issues. Get a copy of the Paper Task Force Report . Ask your paper suppliers about the forest management practices used to produce the paper they offer. Tell them your buying decisions will take into account the practices used on their own lands and on lands from which they buy additional wood. Get it in writing.
Many paper companies issue a report specifically on their forestry practices each year.
Request a copy. Get a second opinion. Ask an environmental expert not connected with the paper industry to help evaluate the information you receive from paper suppliers. Simply by asking about forestry you can send paper manufacturers a signal that you expect them to use environmentally preferable forest management practices. Then buy from the companies with the best practices.