Letters, we got your letters

Viscaria,
We have several books on architecture available. If constructing a bath you should consult with Marcus of Tytalus, I believe he and Apollodorus were amicus before his sudden passing. He designed the frigidarium, caldarium and tepidarium in such a way that heat and coolness can be imparted magically without the need for penetrating magic resistance. It is a bit over my head, as I don't understand the art of Ignem very well, but Carmine was absolutely enthralled with his process.

Andru

With this letter two tomes on architecture are sent, atop the volumes are a note which reads, "For the library of Mons Electi from Valnastium." These are two tractatus on Architecture of quality 10, written by Tektonius of Bonisagus.