I've had comprehensive scans done of the entirety of the pieces 'Dubstep' and 'Mammoth'. They are located on full hi-res display glory at my new website - http://www.petehillstrom.com
But here are small, crisp versions below.
Dubstep , pen & ink , 42" x 60" , 2012/13
Mammoth , pen & ink , 42" x 60" , 2011