A Washington, D.C., resident recently came across a 1922 article that revealed early signs of climate change.

John Lockwood found a 1922 article in The Washington Post when he was conducting research at the Library of Congress. The article's headline read: "Arctic Ocean Getting Warm; Seals Vanish and Icebergs Melt," according to a report in the Washington Times.

The article reports "great masses of ice have now been replaced by moraines of earth and stones," and "at many points well-known glaciers have entirely disappeared."

Click here to read the Washington Times story.

Lockwood said he's discovered other articles from the 1920s and 1930s on the same subject.

"I had read of the just-released NASA estimates, that four of the 10 hottest years in the U.S. were actually in the 1930s, with 1934 the hottest of all," Lockwood said.