Forgive my blatant self-promotion, however I’d like to announce the February 16, 2011 release of our new textbook; Rodak BF, Fritsma GA, and Keohane EM, Hematology, Clinical Principles and Applications, 4th Edition, Elsevier-Saunders, 2011. Contributors to the coagulation sections include Larry D. Brace, Margaret G. Fritsma and David L. McGlasson, who also contribute to Fritsma Factor. Prior contributors to the coagulation chapters, much of whose information was retained for the current edition are Cynthia Johns and Marisa B. Marques. The fourth edition features an expanded glossary written by Margaret G. Fritsma. Thanks largely to the editors at Elsevier, the text of the fourth edition is engaging and accessible, and the book now has more illustrations than ever, including numerous original photomicrographs from the laboratory studio of Prof. Rodak. We hope you like the new edition at least as well as you liked the third!