I think the main reason these aren't working as-is is because the href link probably doesn't exist outside Wayback anymore. Good find though!
There might be a better way around this, but I think you'll have to download the one you want and upload it to an image hosting site. Then you'll be able to update the href with the new link and it should work. W3 schools explains how it works pretty well.
You could try finangleing a link to the image directly via Wayback. However, the link might not remain stable. It's also kind of rude to link to other people's images (particularly small companies or services) because it uses the resources for running their website to show something on yours, so it's better to have said image hosted on a website that's meant for that.