I just spent an hour at our local building department combing through old blueprints and building plans. It is amazing how many different decades of construction can be part of one home. I am completely enthralled with blueprints and drafting. There is something very timeless about the whole process. For anyone who has done any drafting, they understand that everything is executed in a particular way and very little, if anything, about it has changed. Blueprints make feel a little bit more connected to the past in a very tangible way.
In the files I also came across typed letters from the 50s from neighbors complaining about construction taking too long.
So beware, when they say it is going in your permanent record, they aren’t kidding.