Misc: where was the 1962 world's fair?

Questions

what's the first video game ever to contain an "easter egg"?

the quote "you spoony bard!" is from what game?

nolan bushnell, creator of the first arcade game, also founded the video arcade chain now known as what?

which was the first console "duke nukem' game?

what color is the 1-up mushroom in super mario bros.?