Misc: on what river is the city of cincinnati located?

Questions

An organisation of business and professional men was founded in Chicago in 1905 out of a weekly luncheon club. What is it called?

Who wrote the novel "Finnegan's Wake"?

Of which island group is Viti Levu, the largest?

In sailing, what is a warp?

Where would you find vox humana and vox angelica together?