[1] : WordNet (r) 2.0

oklahoma
     n : a state in south central united states syn: sooner state,
          ok
see also:
sooner state ok 

[2] : U.S. Gazetteer (1990)

oklahoma, pa borough, fips 56496
  location: 40.58092 n, 79.57465 w
  population 1990: 977 406 housing units
  area: 1.9 sq km land, 0.1 sq km water

[3] : U.S. Gazetteer Counties (2000)

oklahoma -- u.s. county in oklahoma
   population 2000:    660448
   housing units 2000: 295020
   land area 2000:     709.093032 sq. miles 1836.542444 sq. km
   water area 2000:    9.219598 sq. miles 23.878647 sq. km
   total area 2000:    718.312630 sq. miles 1860.421091 sq. km
   located within:       oklahoma ok, fips 40
   location:             35.509671 n, 97.496525 w
   headwords:
    oklahoma
    oklahoma, ok
    oklahoma county
    oklahoma county, ok

[4] : U.S. Gazetteer Places (2000)

oklahoma, pa -- u.s. borough in pennsylvania
   population 2000:    915
   housing units 2000: 390
   land area 2000:     0.742117 sq. miles 1.922074 sq. km
   water area 2000:    0.043670 sq. miles 0.113105 sq. km
   total area 2000:    0.785787 sq. miles 2.035179 sq. km
   fips code:            56496
   located within:       pennsylvania pa, fips 42
   location:             40.581613 n, 79.574586 w
   zip codes 1990:    
   note: some zip codes may be omitted esp. for suburbs.
   headwords:
    oklahoma, pa
    oklahoma

Oklahoma >> O Words
Oklahoma, definition of term: Oklahoma
oklahoma_pag1.html

Oklahoma City >> O Words
Oklahoma City, definition of term: Oklahoma City
oklahoma+city_pag1.html