Here for your consideration is a facsimile reprint of

Brevis De Emendatione Organi Musici Tractatio: Kurze Vorstellung Von Verbesserung Des Orgelwerkes

The author is a baroque musician, Michaelis Buliowski.

This is a facsimile of the Latin and German original, originally published in 1670. Fascinating book for anyone interested in music history, organs, or 17th century books and printing.