When you watch a President of the United States give a formal speech, you'll probably see a plaque bearing the Presidential seal on the podium. This was not always so. In 1850, President Millard Fillmore thought that the office of the President should have its own seal, so he sketched out this design and sent it to Edward Stabler, a sealmaker:
The heavy lifting was definitely done by Stabler. Born in Maryland in 1794, Edward Stabler was self-taught and began his career engraving jewelry at the age of 16. By the time he retired in 1863, Stabler had designed seals for nearly every department in the Federal Government, several states, cities, and many businesses.
Read more about the history of the Presidential seal at the link.