http://www.map-factory.org/6-call-of-duty
http://www.fileplanet.com/148793/140000/fileinfo/Call-of-Duty:-United-Offensive-Map-Pack
maps CoD 4
http://www.mahalo.com/Call_of_Duty_4_Maps
http://www.strategyinformer.com/pc/mods/callofduty/mod.html
http://browse.files.filefront.com/Call%20of%20Duty/;144425;/browsefiles.html