Indexes allow searching by nationality, gender, specialization and subject. A Biographical Dictionary. By Martha J. Bailey. ABC-CLIO, c. 1994. One volume book focusing on American women scientists primarily in the physical and natural sciences in the nineteenth and early twentieth centuries.
Entries are brief, but provide good background information.
Blacks in Science and Medicine. By Vivian Ovelton Sammons. Hemisphere Publishing Corporation, c. 1990. One volume book that includes over 1,500 brief biographies of blacks in science and medicine. Provides references for further reading.