Calendar-book perfected. (Machine-translation by Google Translate, not legally binding)

摘要

Calendar © agenda improved, the field of consist of two outer sheets, interconnected and a series leaf intermediate by a spiral, wherein one of said covers has greater length and fold to the height of the remaining type, and extreme flap, while the top menor has one or two windows, to close the cover being folded by mayor canto front on the minor, by way of agenda; or, conversely, from the outside, leaving the fold surface below body to form a triangular collation upward spiral with leaves and intermediate or other side toward one. (Machine-translation by Google Translate, not legally binding)