At this point in time this was a damn good drawing of one of my hapless algebra teachers. I actually remember doing it in class since paying attention never mattered much for me anyway. Good guy.
18x24 watercolor paper, technical pen and probably pastel pencil or just regular pencil blended with a q-tip. This was done for a friend who owned a wine and spirits shop, so I guess it's a vine. Or a tree. Whichever....
Another half-assed attempt at doing SOMETHING "underground- like". Meh. Magic marker on sketchbook paper. (I still like the name, though.) Late 70's...