Recovering overwritten description (https://help.trello.com/article/783-recovering-the-description-of-a-car…):
https://trello.com/1/cards/[card ID]/actions?filter=updateCard:desc (replace [card ID]).
Info of entire board:
trello.com/boards/BOARD-ID/actions?filter=updateCard:desc
Trello card history chrome extension: https://chrome.google.com/webstore/detail/trello-card-history/efphljpda…