Wow… such an interesting drawing style: completely uniform line weight and a highly selective/limited use of perspective (like the boxes and ship in panel 7, or the brick wall in panel 5). It reminds me a bit of playing card art.
The reduction in strip size has been steady and pretty dramatic. This great image popped up online last week—size comparison of a single 1928 newspaper comic with the entire comics section from a 2013 paper:
This is gorgeous. Please let “Watercolor Wednesdays” be a continuing thing.