https://collections.libraries.indiana.edu/presidentialcartoons/presidential-campaigns-a-cartoon-history–1789-1976

This database from the University of Indiana houses political cartoons related to Presidential elections from 1789 to 1976.  A particularly interesting set came from the 1832 election, where Henry Clay and his supporters depicted Andrew Jackson as a king abusing his veto power.  The famous “King Andrew the First” cartoon came from this election, as well as the first depiction of Uncle Sam in a political cartoon.