I can't stress this enough,
if you have the opportunity to scan a cover you don't see on this site, then go ahead and do it
You don't have to to any editing, just scan it at 300dpi or preferred 600dpi and upload it as raw and others will do the rest.
So if you or friends/family have a scanner or if you have a scanner at work/school scan whatever you can if you have the time. The worst that could happen is that you scanned for nothing but it's more likely that someone needs exactly the cover you have, like in this request
