I'm wondering if anyone has considered getting permission to add the
publications of the World Health Organization to our catalog?

From their web site:

"Become a WHO publishing partner
Information about health is fundamental to saving lives and making us all
healthier. To reach more readers with its information, WHO is seeking
partners to reproduce and/or translate the books and reports in this
catalogue. Royalties are modest and can be waived in the case of non-profit
editions or those intended for developing countries. For further
information, please contact: Knowledge Management and Sharing, World Health
Organization, CH-1211 Geneva 27, Switzerland, Tel: +41 22 7912460, Fax: +41
22 7914806 pubrights@who.int
http://www.who.int/publications/en/