D.C. resident John Lockwood was conducting research at the Library of Congress and came across an intriguing Page 2 headline in the Nov. 2, 1922 edition of The Washington Post: "Arctic Ocean Getting Warm; Seals Vanish and Icebergs Melt."

The 1922 article, obtained by Inside the Beltway, goes on to mention "great masses of ice have now been replaced by moraines of earth and stones," and "at many points well-known glaciers have entirely disappeared."

"This was one of several such articles I have found at the Library of Congress for the 1920s and 1930s," says Mr. Lockwood. "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."