Laurie Blass is a writer and editor specializing in print and digital English Language Teaching materials. She has an M.A. in Linguistics and a TESL certificate from the University of Pittsburgh and has taught ESL in the United States and France. She is the author/co-author of over 40 ELT titles representing a wide range of audiences, from adult education to English for academic purposes. Deborah Mitchell is an experienced materials writer, instructor of English for Academic Purposes in higher education, and trainer/mentor for new teachers. She is co-author of several ESL textbooks and has published in the TESOL Journal. She has an M.A. in Applied Linguistics from the University of South Florida.