Hi
Don't use the snipping tool to capture the image, no matter what you do the image will only be at your screen resolution, i.e. 72, or 96 pixels per inch or worse. If you are only capturing part of the screen it will look even worse when blown up.
Find the photo by searching for it online and then save the image as a file, (right click on it and select Save As) and look for an image that is at a high resolution.
For example 2000 by 2000 pixel size or larger for a record album size. Avoid images that are small like 500 by 800 pixels there's no way to increase the quality. It should show the size of the image under the picture on the screen.
Do your Search and then click on Images at the top of the browser screen to see only images of you search.
If you want to increase the size of an image without getting the pixelation that makes it look all blocky, use Photoshop and using Image Size you can enlarge the image selecting Resample Image Bicubic.
The image will get larger without the pixels getting bigger, this won't make the image look sharper but you won't see the pixels.
If you want an image smaller without losing the detail you can do the reverse.
Reduce the size of the image and increase the resolution so that the image stays sharp, it will appear on screen the same either way at the same size you are always going to see it onscreen at the native resolution.
But if you zoom in on the high resolution image it will look much sharper.
I was able to find a high quality image of a Morgan Plus Four in just a few seconds.
Mike