What reminds you of "Old School" gaming?

While I was prepping for my game yesterday I needed to go through some of my maps to figure out which ones I wanted to borrow from for the adventure.  I already had a rough vision of the map in my mind and all I needed to do was find something "close enough".

As I poured through gigabytes of maps I have on my laptop I kept getting drawn to some excellent maps I've collected from across the net.  The maps that really drew me in were those that looked like they were hand drawn.

There is just something about a hand drawn map that screams "old school" to me.  I cannot get enough of them.