The NSW State Records blog, 'Archives Outside', recently featured an article by University of Newcastle Archivist Gionni DiGravio. Windows to another time details some of Ralph Snowball’s glass negatives.
"This particular Collection of around 990 extraordinary glass slides forms part of Norm Barney’s Photographic Collection that was deposited with the University’s Cultural Collections in June 2008."
Check the Archives Outside web site for more information and images, such as the photograph reproduced above, 'Wallsend No 1 tunnel, Wallsend, NSW, 11 June 1897.'