What has the author Billy Sprague written?

Billy Sprague has written:

'A friend should be radical, fanatical, but most of all, mathematical' -- subject(s): Friendship, Poetry

'A friend should be a magician, a physician, but mostly fond o' fishin'' -- subject(s): Friendship, Poetry

'Ice cream as a clue to the meaning of the universe' -- subject(s): American Poets, Biography, Christian biography, Gospel musicians