Here’s a selection of colour slide photographs of Birmingham in the 1960s taken by Phyllis Nicklin, then the Staff Tutor in Geography at the University of Birmingham. I picked out three but there are many more. Have a look before we get to the meat of the matter. (Click for bigger.)

Anderton Street terraces, Ladywood, 1968

Little Anne Street / Milk Street, 1953

Bull Ring, 1959
According to the site (and D’log’s research), Nicklin died in 1969 leaving thousands of slides taken for her classes. 450 of these were scanned and released online in 2004/5 as part of the “Chrysalis” project from the West Midlands Museums, Libraries and Archives Council. This project, and the website, seems to be firmly defunct and offline. So the only record we have of these photos (which, you’ll note, were “kindly made available to down-load and redistribute for non-commercial research or private study purposes” by the University) is an unauthorised gallery from Keith Berry who was wise enough to take some copies.
So where are these photos? I’d imagine someone is working in some department where there’s a CD with them on. If they are licensed to be made available it shouldn’t be hard to throw them up on Flickr or similar. Hell, I’ll do it if you post me the disc. Or you could contact The Big Picture - they’re looking for old photos of Birmingham as well as contemporary ones.
[Update: Thanks to Dave Harte in the comments it looks like all 450-odd are here. Yay!]
Above all this is an important lesson about the sustainability of funded online projects, not just about the need to keep them online but that passion is an important part of the process. There must be a middle ground to be found here between those with the means and those with the will.