Based on the clue 'by gum the mansion built by this chewing gum mogul...', what is the answer?

What is associated with: by george it was founded in 1990 works through volunteer centers throughout the us? Based on the clue 'by going from gym to gym he learned to box erratic...', what is the answer? Based on the clue 'by gosh this singer seen here is famous for her by...', what is the answer? Based on the clue 'by gum its a fishing spear with a 3 pronged point', what is the answer? Based on the clue 'by her last name this 20th century british prime m...', what is the answer? Based on the clue 'by her own claim the poems of susan polis schutz h...', what is the answer? What is associated with: by him in 1899 the oedipus complex? Based on the clue 'by his account he reached the new worlds mainland ...', what is the answer?