Allan says to the butler, Judd, "If only Arthur Treacher could see you now". Arthur Treacher was an English actor, known for his (typecast) performances as an English butler in American movies.
The first film of Michael Medwin.
The lines quoted, "The boy stood upon the burning deck ..." are from the poem, 'Casablanca' by British poet Felicia Dorothea Hemans, originally published in 1826.