The National Library of Medicine (NLM), on the campus of NIH in Bethesda, Maryland, is the world's largest medical library. It collects materials in all major areas of the health sciences and to a lesser degree in such areas as chemistry, physics, botany and zoology. The collections stand at 5 million items--books, journals, technical reports, manuscripts, microfilms, photographs and images. Housed within the Library is one of the world's finest medical history collections of old (pre-1914) and rare medical texts, manuscripts, and incunabula.

Accurate, up-to-date, comprehensive cancer information from the U.S. government's principal agency for cancer research.

Find the Web's best health guides, medical reports, health news, and videos for any health topic.

Cancer.Net (www.cancer.net) - accurate, reliable and doctor approved cancer information from ASCO, the world's leading organization representing medical professionals who treat people with cancer.

Mayo Clinic — Comprehensive medical diagnosis and treatment; locations and services; request an appointment.

The Waldenstrom’s Macroglobulinemia program at the Dana-Farber Cancer Institute, a Harvard Medical School affiliate, has spearheaded national and international efforts to bring basic and clinical studies to WM (recently defined as IgM secreting lymphoplasmacytic lymphoma). Our site provides information about this disease, our program, our clinic, our clinical trials and basic research efforts, and current news for both patients and physicians.