I'm giving away one of my best sources now, but what the heck - for those who don't know, there's a microfilm-based collection of JW Puttrell and Frank Brindley's newspaper articles at Sheffield Local Studies Library that has kept me transfixed for hours at a time - it's well worth looking through that for all kinds of rare nuggetry, though it can be a tad fanciful and possibly fabricated in certain instances (Brindley was more guilty of that, I'm told). You can print off individual pages at photocopy-quality for 20p a go.
Photos don't come out that great, but the text is usually fine, and very handy to refer back to at 3am when the library isn't open and you can't get to sleep...