Fuge (Kralik, Mathilde)
It is unlikely that this work is public domain in the EU, or in any country where the copyright term is life-plus-70 years. However, it is in the public domain in Canada (where IMSLP is hosted) and other countries where the term is life-plus-50 years (like China, Japan, Korea and many others worldwide). As this work was first published before 1923 or failed to meet notice or renewal requirements to secure statutory copyright, it is almost certainly public domain in the USA as well.
Otto Gauß (1877-1970) and others*
Orgel-Kompositionen aus alter und neuer Zeit (Vol.4)
Regensburg: Alfred Coppenrath's Verlag (H. Pawelek), 1910. Plate IV.
Scanned at 600dpi grayscale, improved, converted to monochrome,
cleaned with 2-point algorithm, additional manual cleaning.
*The extent and nature of Gauß's contribution is not defined in this edition, nor is that of the other editors mentioned in the preface.