There are many secrets hidden within the internet. You may not know this, but an online archive of high-resolution images of every Apollo mission exists. And it's open to the public. And it has more than a few. You can find thousands of amazing photos from Apollo 1 through Apollo 17.
Project Apollo Archive scanned all of the images from the NASA History Office, Kennedy Space Center, and Johnson Space Center to form the Apollo Image Gallery. They have graciously provided these images that, by the way, are all in public domain. That's right, you can download and do whatever you want with them. They show astronauts in space shuttles, during training exercises, and even on the moon.
Out of the thousands that exist we have shared a few of the images in the gallery above, which is a lot easier to view than on the website. You see, the archive has amazing content but its organization isn't the best. You can't simply scroll through the images as you would most galleries, but considering what it provides we'll cut it some slack.
However, we do have some bad news: you will have to wait a few days before you access the photos yourself. Apparently because the cat got out of the bag, the site is unavailable due to server overload.