It was a letter by Franz Pfanner from 1873. Sadly, after a short search, I could only find a version of it in Croatian[1]. Google translate seams to do an ok jo

It was a letter by Franz Pfanner from 1873. Sadly, after a short search, I could only find a version of it in Croatian[1]. Google translate seams to do an ok job on it. [1] https://www.jergovic.com/ajfelov-most/pater-franz-pfaner-o-vjeri-bosanskih-katolika-u-boga-i-u-rakiju/ https://www.jergovic.com/ajfelov-most/pater-franz-pfaner-o-v...