Owls "Increase" and "Diffusion" in the Castle Tower

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Owls "Increase" and "Diffusion," who lived in the West Tower of the Smithsonian Institution Building, or Castle.


  • Smithsonian Institution Building (Washington, D.C.)
  • Smithsonian Institution Office of Public Affairs


Featured in the "Torch," June 1977.

Cite as

Smithsonian Institution Archives, Record Unit 371, Box 02, Folder: June 1977, Image No. 96-929

Repository Loc.

Smithsonian Institution Archives Capital Gallery, Suite 3000, MRC 507; 600 Maryland Avenue, SW; Washington, DC 20024-2520



Restrictions & Rights

  • No access restrictions Many of SIA's holdings are located off-site, and advance notice is recommended to consult a collection. Please email the SIA Reference Team at osiaref@si.edu
  • No Known Copyright


  • Animals
  • Birds
  • Owls
  • Ornithology


Black-and-white photographs

Local number

SIA RU000371 [96-929]

Physical description

Gelatin silver prints; 8 x 10;

Full Record

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