Simple, to the point, termites :/'
During the removal of the old house's shingles they found termites had done their thing in one section...so far. The other part uncovered looks fine, but another part will need it's wood removed then the exterminators have suggested spraying the new to prevent any damage in future. He'll come by tomorrow am to have a look. Another expense, but hopefully with them just being the rot wood kind vs subterranean will be a manageable cost. We'll see what the rest of the house reveals.
Oh and a sheet of newsprint from 1921 was in the exterior wall. Back then you could get coal for $11.80 per ton and a corset in medium bust style, well boned and neatly trimmed for 98 cents. As well as a news story of a "Los Angeles policeman killed and another probably fatally wounded in a pistol duel with bandits..." A few other interesting stories and prices as well. We'll put it the attic along with a paper from now. Fun find.