McGraw-Hill Bookstore - Professional titles, including computer, business, scientific, architecture, engineering and technical books. - http://www.mhprofessional.com/
Maple Lane Publishing - Publishing and selling apple, seafood, family cookbooks - and shipwreck books. - http://www.the-westcoaster.com/
Mad About Books - Publisher's site includes information, excerpts, promos, and sales of their books as well as event information. - http://www.madaboutbooks.com/
Melton Publishing - Independent publisher of books about the American West, the Pacific Northwest, and the outdoors, as well as a Gothic romance. - http://www.meltonpub.com/
Medusa Books - Las Vegas-based publisher and promoter of general interest books. - http://www.medusabooks.com/
Micro Margin - Books sold at discounts. - http://www.micromargin.com/isroot/MicroMargin/info.html
MSP Books - Selection of books from Main Street Publishing. - http://www.mspbooks.com/