Most of these need no explanation or introduction. (At least they shouldn't if I've done my job right!) I have sketchbooks filled with these. Who were they originally done for, you may ask. Me, I'd answer, though some were paid gigs.
Cartoons, cartoons, cartoons
This is a random selections of cartoons done in the Distant Past, when dinosaurs and typesetters walked the Earth plus brand new hilarity! Yo!