ehm, ain't sure if it's proper to 'advertise' here - if not: mjp, please kick me!
- the book contains of BOTH - the original letters by Buk in English (all as facsimilies) plus translations to German.
But be aware, that there are only a few letters - it's not like buying the big volumes of letters edited by Cooney!
Maybe cirerita, who knows the facsimilies, is willing to give some more objective judging than I could do.