I’ve been getting into having a pdf of the various manuals for things around the house on my phone. I recently consulted the manuals for my fridge, a new dehumidifier and the lawn mower and it was pretty awesome not having to find and dig out a paper booklet each time. My phone is on me all the time plus I can get rid of the paper copies.
How about The Romans in Their Decadence? (Thomas Couture)