Misc: what club, founded in 1950, introduced the use of credit cards??

Questions

[General knowledge] kofi annan is the leader of which organization?

[General knowledge] in which city would you find the notre dame?

[General knowledge] who wrote the banned book 'spycatcher'?

[General knowledge] how long did the worlds first heart transplant patient live?

[General knowledge] where would you find an inner and outer bailey?