Dear amazing readers:

For now, find our reference material for today´s masterclass. I will return as soon as possible to complete the rest of the text and the musical section of this dispatch. However, the core of our class is ready for you. Feel free to download it, print it, read it with your friends, family, colleagues, and acquaintances.

It has been extremely difficult to find information and data about this economic sector in the context of the end of the 19th century. Blessings, a bientot!