[Disestablishmentarian]

“https://en.wikipedia.org/wiki/Humpty_Dumpty#/media/File:Humpty_Dumpty_Tenniel.jpg";

Compare with:
“http://freerepublic.com/focus/chat/3748375/posts?page=371#371";

My first attempt at images is a failure.

[AZLiberty]

Apparently Wikipedia doesn't allow hot linking to the thumbnail. You have click on the thumbnail and then snag the image address from the full-size picture. Try this HTML:

<img src="https://upload.wikimedia.org/wikipedia/commons/f/f0/Humpty_Dumpty_Tenniel.jpg" width="400">

Humpty Dumpty sat on a chair ...