The presidential pardon of the Thanksgiving turkey has become an annual event, but the peace pact between the fowl and the White House is a relatively new thing. And in fact, a few presidents actually ate their guests!

The first president to unofficially pardon a turkey was Abraham Lincoln, who instructed the White House to save a bird given to the president. Lincoln’s son had grown fond of the bird (and the president was a big animal lover).

But Lincoln didn’t start a tradition, and neither did President Harry S. Truman, who is often credited as the father of the presidential turkey pardon. (National Constitution Center)

Here’s a look back from Truman to Biden.