Calculations

Paving problem, FB Johnston, Library of Congress“6th Division mathematics class on a street paving problem,” Washington, D.C., ca. 1899, by Frances Benjamin Johnston, via Library of Congress Prints and Photographs Division.

Before she became immersed in the work of photographing old houses and gardens, Johnston was a photojournalist and a portraitist. In 1899, she became interested in progressive education and made a photo survey of students at public schools in Washington, D.C.