[The series and its rules are explained here, where you will also find links to the songs for the other states.]
8:1. Delaware. (1, 2 scroll down, 3.)
8:2. Our Delaware: 'Oh our Delaware! Our beloved Delaware!' (1.)
8:3. Schooldays: 'In Delaware when I was younger / I would row upon the lake'. (1, 2.)
8:4. Screw You, We're From Texas: 'I don't care if I ever go to Delaware anyway'. (1, 2.)
8:5. Back In The USA: 'From the coast of California to the shores of Delaware Bay'. (1, 2, 3, 4.)
8:6. Sailing to Philadelphia: 'The morning tide has raised / The capes of Delaware'. (1, 2, 3, 4.)
8:7. Hotel Song: 'It said you were from Delaware, I said oh it must be gorgeous there'. (1, 2, 3, 4.)
8:9. Wish To The Lord I'd Never Been Born: 'I'm a-gonna ride in Delaware'. (1.)
8:10. I'm From Delaware: 'I like polluted air, man / I'm From Delaware'. (1.)