Let us take a moment to appreciate some of the less atrocious official departmental logos of the U.S. government while they're still around.
Department of Health and Human Services (HHS)
The symbol is the key element in Department identification. The symbol represents the American People sheltered in the wing of the American Eagle, suggesting the Department’s concern and responsibility for the welfare of the people.
U.S. Department of Housing and Urban Development (HUD)
Originally unveiled in 1966, the Seal of the U.S. Department of Housing and Urban Development
...is a representative of high rise buildings simulating an eagle and giving emphasis to the "urban" in HUD's name. The eagle (shown abstractly) is a symbol of Federal authority. The use of green symbolizes open space, land, growth and prosperity. The blue in the Seal alludes to the quality of life and environment in America's cities.
National Oceanic and Atmospheric Administration of the U.S. (NOAA)
NOAA's first administrator, Dr. Robert White circa 1971:
A white, gull-like form links the atmosphere to the sea or Earth. The Earth and atmosphere and the interrelationships between the two are, of course, major concerns of NOAA. The line defining the top of the gull's wings also resemble the trough of a foaming ocean wave against the blue sky. A creature of sea, land, and air, the gull adds an ecological touch to the Earth-sky motif.
Library of Congress
This version of the Library of Congress logo became the main logo on the Library's website in early 2008. Designed by Sagi Haviv of Chermayeff & Geismar & Haviv.