"Australian Post Office Technical Training Publications" - any historical value?

[Whales]

I have a stack of dozens of these things, but I want to clean out.  Don't remember where I picked them up.  Mixture of electronic & telecomm materials, summaries & questions.

Are these of any particular historical value?  At the moment I'm planning on just keeping a few of interest ('practical transistor amplifiers', 'cathode ray oscilloscope principles', 'transistor oscillator principles', 'circuit reading - telephone 801 type') and canning the rest.

[sandalcandal]

Looks pretty nice. I have some old Australian electronics textbooks and I always found them to be much better written and more understandable than the modern American textbooks recommended at uni.

I found some scans from the same series here:
http://www.coxhill.com/trlhistory/history/australian_publications.htm
They seem to be missing some of the ones you have so might be worth getting some scans uploaded onto the net and shared with Rick who runs that site, if you got the time.