↑The number, given by the International Olympic Committee, is open to interpretation and could be as few as 10 and as many as 15. There are numerous reasons for the disparity: National teams hardly existed at the time, and most athletes represented themselves or their clubs. In addition, countries were not always as well-defined as they are today. The number of countries here reflects the number used by most modern sources. See the relevant section for further details.
↑This number of competitors is according to the International Olympic Committee. The identities of 179 competitors are known. Mallon & Widlund calculate 245 athletes, while De Wael finds 246.