Marjorie Fuchs has taught ESL at New York City Technical College and LaGuardia Community College of the City University of New York and EFL at the Sprach Studio Lingua Nova in Munich, Germany. She holds a Master's Degree in Applied English Linguistics and a Certificate in TESOL from the University of Wisconsin-Madison. She has authored or co-authored many widely used ESL textbooks and multimedia materials, notably Crossroads, Top Twenty ESL Word Games: Beginning Vocabulary Development, Around the World: Pictures for Practice, Families: Ten Card Games for Language Learners, Focus on Grammar: An Intermediate Course for Reference and Practice, Focus on Grammar: A High-Intermediate Course for Reference and Practice, Focus on Grammar Intermediate CD-ROM, Focus on Grammar High-Intermediate CD-ROM, Longman English Interactive Levels 3 and 4, and the workbooks to the Longman Dictionary of American English, the Longman Photo Dictionary, The Oxford Picture Dictionary, and Focus on Grammar: Intermediate and High-Intermediate.

Margaret Bonner has taught ESL at Hunter College and the Borough
of Manhattan Community College of the City University of New York, at Taiwan National University in Taipei, and at Virginia Commonwealth University in Richmond. She holds a Master's Degree in Library Science from Columbia University, and she has done work toward a Ph.D. in English Literature at the Graduate Center of the City University of New York. She has authored and co-authored numerous ESL and EFL print materials, including textbooks for the national school system of Oman, Step into Writing: A Basic Writing Text, Focus on Grammar (Intermediate and High-Intermediate Student Books and High-Intermediate Workbook), and The Oxford Picture Dictionary Intermediate Workbook. Her non-print materials include co-authorship of the Focus on Grammar CD-ROM (Intermediate and High-Intermediate) and contributions to Longman English Interactive Level 3.