This image of SDH was drawn for panel 2 of page 20 in my 2009 comic Super Duper Ham: Day One. The sphere in the upper right corner was drawn for panel 2 on page 42.
The sphere in the lower left corner was drawn for panel 1 on page 2 of my 2010 comic Martian Debut.
The three images were collaged together on another piece of paper with white paint in 2011. I added color in 2015.