Black-and-white photograph. Dark background with a single white iris in the foreground. (Elementary School (K-5); Middle School (6-8); High School (9-12); College/Adult)
TRC audience:
High School (9-12)
College/Adult
Middle School (6-8)
Elementary (K-5)
TRC subject:
Photography
Science
Early Twentieth Century (1900-1945)
TRC format:
Poster