The biggest collection of bat-logos!! They're all amazing, you did a really great job, my friend!!! Can you upload as individual images the 1930s & 1940s logos, but if is it possible, without the inscription?
I'm glad you like it, of course you can use it as a facebook cover, in fact if you like I'll reformat it so that it fits the dimensions of facebook's cover photo with a little space for where your profile picture will overlap.
Download this and use it for now and when I have the reformatted version I'll message you.