Although they are not part of the documentary patrimony, the Archive of Santa Croce preserves also
seventeen chorales of the church.
These choir works contain the liturgical songs and according to this special function have been saved
from the misappropriations of the works of art and books occurred between the 1700s and 1800s.
Nine of these, the earliest ones, are decorated by hand with miniatures, adorned with historiated and
illuminated initial letters, by the great artists who lived and worked during the 1300s and 1400s.
There are also precious frames composed of colorful leaves, flowers, birds and human faces which embellish entire pages.
Among the subjects represented in these miniatures there are also the representation of Franciscan
friars who sponsored the work, portrayed with the typical grey habit in the process of singing and praying.