“Stresstest2”, pen and ink, ©2019 Aaron I. Spielman

“Stresstest1”, pen and ink, ©2019 Aaron I. Spielman

“77”, pen and ink, ©2019 Aaron I. Spielman

“Alas For Concentricity”, pen and ink, ©2019 Aaron I. Spielman

“Checking Altitude”, pen and ink, ©2019 Aaron I. Spielman

“Permutations Of The First Exit”, pen and ink, ©2019 Aaron I. Spielman