This is a collection of architectural design materials I used in university. I am listing it because I no longer need it after passing the architect's exam. I hope it will be useful for those in the architecture field or those preparing for the architect's exam. Although it is over 20 years old, the contents are relatively clean as I majored in structural engineering. However, when I briefly checked it, I found one instance of pencil writing. I erased it with an eraser, but I cannot guarantee there are no other marks. There is also some dirt on the top edge. I cleaned it, but the dirt could not be wiped off. Please consider purchasing if you understand that this is an old, used item. It will be shipped via Yu-Packet Post.