Illustrations by Rachel Ignotofsky are adequate but lack color. Each scientist is assigned a single neon color. For instance, illustrations for Maria Sibylla Merian who observed and painted the metamorphoses of butterflies are each some shade of bright blue against a charcoal gray background. Marie Cure's illustrations are neon green and so on.
Interesting facts can be found in the margins. The entry for Ada Lovelace, for instance, relates in the margins that Lovelace signed each of her letters to Charles Baggage as "lady fairy." In another entry (for Rosalind Franklin) we learn that Franklin, who took the first photo of DNA's double helix structure, also created a huge sculpture of the tobacco mosaic virus for the World's Fair.
Ignotofsky's Women in Science is a wonderful starting place for those writing biographies on scientists. Since the entries or so short, though, most students will need to consult more resources.
This book will please everyone but its especially written for young readers, grade 2 through 5.