I've always gotten my images from the University of Utah, a.k.a. the UUSS. And sometime on the evening of April 4th, 2016, they suddenly completely changed how they provide those images. Rather, they got rid of those images. I'm therefore unable to archive them anymore or present them to you in the efficient fashion you've come to know and love.
From what I can tell so far about their changes, seismographic images have now become just "seismographic image." Every seismogram now shows only and exactly the past 24 hours of its life, as if they don't want anyone having the ability to look at its history even two days later. The filenames don't even have anything in them anymore but the station's ID. The only way for me to compensate for this is to only download each station's image once a day and then stick it in the archives. That means they'd never be live again. You'd have to go use their site to get live images. They couldn't have invented a better way to break my site if they tried. I'm not saying they were trying, but...
...but I don't know of another source for the old-style images. If you do, or have a better idea for how to compensate for the New Seismic Order, please write. If you don't, maybe utilizing the first link on this page instead will do more good. (But please be civil, internets.) I'm still waiting to hear back from them about whether the old-style seismograms are still being generated somewhere; they may be. But if not, there's no way I alone will ever get them to bring them back.
And, hey. At least the quakes still work.
Update, 4/6/2016: It's official. I got the following response: "For now, we will have only one day. We'll be working on having multiple days eventually. The old style Webicorders are no longer being generated." Which begs the question, why did they stop making them if they plan to start making them again "eventually?" Why do they consider restricting the amount of data they serve as an "improvement?" Sure, it's prettier now maybe, but it's almost completely useless. My conclusion: this was all intentional. They don't want us knowing anymore, and they'll never bring back the old-style seismograms. That or they were licensing the webicorder-generation software and decided they weren't going to pay for it anymore (exceedingly-unlikely, but I do know that Swarm, what they're using now, is free). I literally can't think of any other explanations... but I guarantee you that no true scientist would act like this. To scientists, more data is always better, and less data is always worse. This was not done for any scientific reason. This was all politics... unless they're trying to hide some event that they know is almost here...
I guess it's up to you. In the meantime I'll see what I can do to start archiving the new-style one-per-day images. They won't be live, but at least there'll still be history to look at. What a mess. I gotta get to work.