Marjorie Fuchs holds a Master's degree in Applied English Linguistics and a Certificate in TESOL from the University of Wisconsin-Madison. She has taught ESL at the New York City Technical College and LaGuardia Community College of the City University of New York. Marjorie has co-authored many widely used ESL textbooks, including the first edition of the OPD Workbooks, and the Focus on Grammar series (Pearson). Margaret Bonner holds a Master's degree in Library Science from Columbia University and she has done work towards a Ph.D. in English Literature at the Graduate Center of the City University of New York. She 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 has also co-authored many widely used ESL textbooks, including the first edition of the OPD Workbooks and the Focus on Grammar series (Pearson).