The 1919 Edition of La Bandera de las Estrellas

Better known as "
The Star Spangled Banner" for anglocentric monolinguists.
Boing Boing also found a link to
four other Spanish versions of the anthem here at the State Department's website.
Think Progress has a post about how Bush may have been against the idea of the anthem being sung in Spanish last week, however he had no qualms about
Jon Secada performing it in Spanish during his campaign and inaugaration back in 2001.