Patreonus is the subsection for sketchbook fillers from August 2014, the first month when Dan offered on Patreon to draw "sketchbook" images for backers. Along with the images for the backers, there are also two "milestone" images with topic chosen by Dan, and those are the only images with multiple panels: while there was a multi-panel option, no-one chose that.
It starts with EGS Sketchbook Comic for 2014-08-13 ("Requested by Jamie - Vladia in a dress similar to her original outfit, like an evening gown.") and ends with EGS Sketchbook Comic for 2014-08-29 ("Requested by Anonymous - Ashley, Rhoda, Catalina, Diane, and Liz V5'd and in swimwear.").