Description: [caption id="attachment_12162" align="aligncenter" width="384" caption="A participant discusses a lock of hair from a member of her family with NMAAHC staff at a Save Our African American Treasures event held in Detroit, Michigan, by Michael Barnes, Courtesy of The Smithsonian's National Museum of African American History and Culture."][/caption] [caption
Description: Ruth B. MacManus and Gertrude Brown bonded over their heavy workloads and shared experiences as working women in the Great Depression. Together, they helped improve a publication that does not bear their names: the Smithsonian Scientific Series.