Websites
You can see an actual handwritten version of the Monroe Doctrine, as well as a transcript and general information from the U.S. National Archives, right here.
In addition to a general summary of the Monroe Doctrine, the Library of Congress provides links to other primary sources and useful (trustworthy) sites about the text.
Movie or TV Productions
Apparently, there was a twenty-two minute film telling the story of the Monroe Doctrine made in 1939. Who knew? It was cleverly titled…The Monroe Doctrine.
Articles and Interviews
This admittedly lengthy article from the then-New York Ledger was published around the time that the French monarch decided to put a French emperor on the throne of Mexico. It's a fascinating look at how prevalent the Monroe Doctrine and its policies were later in the 19th century.
Okay, so this article is actually about Woodrow Wilson, not James Monroe. The Monroe Doctrine comes up, though, because what the article is focusing on is Wilson having to shift away from America's traditional isolationist policy when WWI came around. The article nicely illustrates the bigger picture, to show you the Monroe Doctrine's effect for nearly a century, then how it had to change to work in world of the 20th century.
LeFeber is discussing Teddy Roosevelt, but the first part of his response is all about how TR used and changed the Monroe Doctrine, and why that change was significant.
Video
A guy who calls himself HipHughes (good name, or best name?) explains the Monroe Doctrine pretty well in under two minutes.
Audio
In case you want to hear someone read the Monroe Doctrine aloud. (Sorry, it's not actually Monroe himself.)
Images
Like we do today, Monroe's entire speech was published immediately in the newspapers. Here's what it looked like.
This portrait of the president hangs in the Blue Room of the White House.
Believe it or not, we have some photos of the man who was so influential in the ideas of the Monroe Doctrine.
This map shows the geographic makeup of the U.S. at the time the Monroe Doctrine was given, including the recent additions of Missouri and Maine, as well as unincorporated territories like Oregon. He even labels known areas inhabited by Native American tribes, although you'll have to zoom in to read any of it.