Here are two of me on the YZ climbing the coal pile in 1995.

Hill Climb
Zoomed In

Here are a few from a Tower City ride on 05/2001:

Gas It Mark!
What Am I Doing?
Don't Stop
Keep Kicking
Mark Riding Down the Wall
I'm Riding Down the Wall
Ready to Ride
Truck Balloon
Ice Cream Balloon
Who Says Dirtbikers Aren't Civilized (Mark, Pete)
Mark, Me, Tom