Listed here are many examples of how art was used to earn money.
Page 251… A type of 3d image art that could be used in advertising
Page 200… A type of art that is in the shape of your name.
page 152… Business was so brisk that H.H. hired 6 salesmen.
Page 216… Engraving idea worth looking at.
Page 237… Library of Paintings
Page 230… A novelty about Mars could creates sales on ebay.
A type of sketch that every homeowner would be interested.