The New York Times corrected a 26-year old mistake on Tuesday.
In 1985, a reader wrote the paper a letter correcting its use of the phrase "hansom cabs" to describe the horse-drawn carriages in Central Park. Hansom cabs have just two wheels, whereas carriages have four. The Times published the letter, but continued to use "hansom cabs" incorrectly until Tuesday, when it issued a correction for the mistake in an article from last week.
This is not the first time the paper has issued a correction for an error made decades before. In 1969, the Times retracted a 1920 editorial that claimed space travel was impossible.