Prayer book with handwritten notes

This prayer book comes from the genizah in Niederzissen. The book contains prayers for Yom Kippur Katan, the small day of atonement, a spiritual day of repentance and fasting for devout communities. The owner of the prayer book was Aaron u-veno Zekel from Sulzbach, while a written addition to the book states that its previous owner was Elias Bonn from Hilfrath near Hückelhoven.