An American schoolbook insulted kings after its independence

The New-England Primer is a famous schoolbook whose content varied significantly to reflect the political transformations of America. Before independence, the letter K was associated with a verse praising the good king, which later became a scathing critique asserting that queens and kings are vain things. The most visible political modification occurred in 1776, when the image of King George III was simply given the name of John Hancock.