The Collaborative International Dictionary of English v.0.48:

Golden-eye \Gold"en-eye`\ (g[=o]ld"'n*[imac]), n. (Zool.)
   A duck (Glaucionetta clangula), found in Northern Europe,
   Asia, and America. The American variety (var. Americana) is
   larger. Called whistler, garrot, gowdy, pied widgeon,
   whiteside, curre, and doucker. Barrow's golden-eye of
   America (Glaucionetta Islandica) is less common.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Whiteside \White"side`\, n. (Zool.)
   The golden-eye.
   [1913 Webster]

U.S. Gazetteer Counties (2000):

Whiteside -- U.S. County in Illinois
   Population (2000):    60653
   Housing Units (2000): 25025
   Land area (2000):     684.770119 sq. miles (1773.546391 sq. km)
   Water area (2000):    12.242187 sq. miles (31.707117 sq. km)
   Total area (2000):    697.012306 sq. miles (1805.253508 sq. km)
   Located within:       Illinois (IL), FIPS 17
   Location:             41.778260 N, 89.867831 W
   Headwords:
    Whiteside
    Whiteside, IL
    Whiteside County
    Whiteside County, IL


U.S. Gazetteer Places (2000):

Whiteside, MO -- U.S. village in Missouri
   Population (2000):    67
   Housing Units (2000): 31
   Land area (2000):     0.090827 sq. miles (0.235241 sq. km)
   Water area (2000):    0.000988 sq. miles (0.002559 sq. km)
   Total area (2000):    0.091815 sq. miles (0.237800 sq. km)
   FIPS code:            79558
   Located within:       Missouri (MO), FIPS 29
   Location:             39.184899 N, 91.015952 W
   ZIP Codes (1990):
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Whiteside, MO
    Whiteside