Christian Wihtol: pls. buy or borrow this book and write mold article. To _understand_  mold, read Surviving Mold, Life in the Era of Dangerous Buildings by Ritchie C. Shoemaker MD, biotoxin researcher, 2010. Astonishing: if you enjoy learning from documented real life horror stories, you will be enlightened in this competently written book. Older buildings especially prone to mold; schools in East (+ elsewhere).  A very small % of people have mold allergy gene that triggers severe health consequences. The blood test should become required in med protocols. Many mistake it for Lyme disease, chronic fatigue..

You wont look at moldy bldgs, past or present, the same after reading the nightmares teachers, students, medical personnel and others had to endure to gain recognition, redress. 

BTW, a UO prof./wife had to abandon a new house on Eugene's edge decades ago leaving belongings because lumber not dried enough. Also EIFS stucco an issue for some homes. Keep houses heated to 59F BTW.