Smithsonian Astrophysical Observatory Radiation and Organisms Division Search this
Smithsonian Institution Building (Washington, D.C.) Search this
Century of Progress International Exposition (1933-1934 : Chicago, Ill.) Search this
4 x 3.25;
Between 1929 and 1934
See also MNH-11036.
See also Record Unit 9597.
Florence E. Meier in the Laboratory of the Division of Radiation and Organisms, located in the basement of the Smithsonian Institution Building, or Castle. Shown here is equipment for determining wave-length effects on the growth of algae.