The pages read like a modern-day Harry Potter novel.

But the writing does not denote the characters Ron Weasley saying, “There’s nothing written in this diary,” and Hermione Granger responding, “It must be invisible ink!”

These are newly-declassified, nearly century-old CIA documents, typed and hand-written with titles like “Secret Writing” that, among other things, divulge formulas for making and uncovering invisible ink.
The six papers date as far back as 1917, and until their release on Tuesday were among the United States’ oldest classified documents.

One of them lists ingredients used in German secret ink.

Whereas the Harry Potter character Hermione can simply command “Aparecium!” to make the words appear on the page, these documents indicate early 20th century spies had to employ much more elaborate methods.

The CIA released the documents to the public because the information contained in them is no longer considered to be sensitive. They are believed to be the only remaining classified documents from the World War I era, according to the spy agency.

“These documents remained classified for nearly a century until recent advancements in technology made it possible to release them,” CIA Director Leon Panetta said in a statement. “When historical information is no longer sensitive, we take seriously our responsibility to share it with the American people.”

Source: Laurie Ure for CNN.

Up Next

F/A-18C Hornet experiences engine fire, lands safely on USS Carl Vinson (video).

The pages read like a modern-day Harry Potter novel. But the writing does not…