Courtyard by Marriotthotel chain
JW Marriott Hotelshotel chain, business
Lockheed Martindefense contractor, public company
Marriott Internationalhotel chain, business, enterprise, public company
Martin Mariettabusiness, enterprise
National Center for Biotechnology Informationresearch institute, data library
Society of Vertebrate Paleontologyscientific society, academic publisher
United States National Library of Medicinenational library, medical library