ARRL - U.S.A. Special Event Stations   Special event certificates and QSLs
Argentina - Special Prefixes and QSL Info
Brazil - Special Calls & QSL Managers
Canada - Special Event Callsigns
Great Britian Permanent Special Event Stations
Greek Special Calls  by SV2AEL
Special Event Station Hunter Award (SESH)  Polish Radio Amateurs' Journal "QTC"
Swedish Contest, Special Event, Anniversary and Special Calls