Early Olympic Games allowed for individuals in a team to be from different nations. The International Olympic Committee (IOC) now groups their results together under the mixed team designation. Until 2024 IOC used code ZZX and since 2024 code XXB for designating mixed teams. During the 1904 Summer Olympics, team comprising international members won 1 medal. Until 2024 the IOC attributed to mixed teams 3 more medals, however, since 2024 these medals were reallocated to the particular countries.
Medalists MedalNameSportEventFencingTeam foil
Medals, that IOC until 2024 attributed to mixed teams Until 2024 the IOC also attributed to mixed teams the following 3 medals. Since 2024 the IOC has reallocated these medals to the particular countries. MedalNameSportEventReallocated toGymnasticsArtistic Team All-Around, Apparatus Work and Field Sports Men United StatesAthletics4 mile team race United StatesTug of War Men United States
References
International Olympic Committee 1904 St. Louis website IOC results database