Widely praised, Greenwood's Biographical Dictionary of American Educators (Greenwood, 1978) quickly became a standard reference work for students and scholars of American education. This new volume includes biographical sketches of more than 400 notable researchers, leaders, reformers, critics, and practitioners from all major fields of education and extends the coverage of its predecessor to the mid-20th century. Its topical range encompasses such diverse areas as psychology, music, health, measurement and evaluation, science, special education, history, and administration. It treats education at all levels, including early childhood, elementary and secondary, higher, and adult. Most of the educators profiled were active in the 20th century, but several dozen have been included from the 19th century. A special effort has been made to include women and educators of color whose contributions have often been overlooked in the past.