I realise this may not be useful for everyone, but if you’re looking for photos of old (and new) safety razors you might find this handy:
It is a wonderful resource for free to use images and other media. Need a photo of a American Safety Razor Company razor? They got plenty. How about the all but forgotten Christy razors? Plenty of those too.
Google Image Search can be handy, but for a more focused search try Wikimedia Commons.