Rock Records, 2021- This invisible line, 2021 Struve was an astronomer who looked at the ground, 2021 This is when the ice sheet ended, 2020 The terminal moraine is the accumulation of debris at the end of a glacier, 2019- Stop carrying out your intentions and watch for my signals, 2018 Cloud Drift, 2017 Astronomy of the Asphalt Ecliptic, 2017 Cloud Shadows and Drifting Vapors, 2016-2017 Beautification This Site, 2012-2016 Storm King by the Stars, 2014 Street Signs Became Flags That Mark Mountaintops, 2012-2013 Visitor Center for Erratic Monuments, 2009-2015 Views 1-12, 2013 Landmarks, 2008- A sign marks a summit, 2012 The Work Office (TWO), 2009-2012 Mountains in the area have formed over some time, 2011 Desearía que estuvieras aquí / Wish you were here, 2011 A summit is a local point of elevation, 2011 Sidewalk Drawings, 2008-2013 Public Utility Trail Network, 2010-2011 Trail Guide, 2010 Local Landmarks, 2010 Brooklyn Constellations, 2007 Big Bang and other theoretical topography, 2006-2008 Faults Create Mountains, 2007 Proposals for…, 2005-2006 One step is 3.6 million miles, 2005