I understand Rule #33 of the Olympic Charter, concerning single city or country hosting of the Olympic games. Does anyone know where I can find the origin of the rule which PREVENTED join bids from Olympic cities/countries? I saw this provision was added to the Olympic charter in 1921, but I cannot find related literature about why the rule for a single city hosting model was instituted in the first place. Can anyone point me in the right direction on this, or perhaps offer guidance as to where I might find information as it relates to the origins of this rule? Again, I understand it has now been changed, but am needing to understand its origins. Thank you.