Misc: elvis presley appeared on how many stamps in 1993?

Questions

joe jones was 'talking' about his girlfriend in which september 1960 hit?

whose films include 'spartacus', 'the vikings' and 'ulysses'?

outside which building was john lennon shot?

on which label did johnny mathis begin recording?

joseph and etienne montigolfier, inventers of the hot air balloon, first believed that their balloon didn't rise due to hot air but an invisible gas given off by fire. what did they name this gas?