When I was a kid, my dad would take us on hikes on the old trails up to lookout towers. Some of the trails on the ground were long gone because they built roads to the towers, so the trails were no longer used. We could follow the trail because when they built the trails back in the 1930s, they marked them with blazes on the trees and nailed up porcelain covered metal signs every so often. The signs were white with black lettering that said TRAIL. I wish I would have snagged one of those signs back then, they were pretty cool looking. As late as the 1980s or maybe early 90s I knew where some of those signs were, but I think they are all gone now along with most of the lookout towers and pretty much all the blazed trees.