http://www.normanfield.com/trolleybus.htm
I hope the link works, they often cause me grief.Yes it does and he is offering Hi Res scans..have fun.
Hi Mr Arch, I dont know Mr Field personally but came across his website about his varied interests. His trolley photographs have a copyright disclaimer sanctioning use by anyone with a genuine interest in them. There is a an e-mail address on the site, I just hope he is still with us if you catch my drift.
If they were my photos I would be honoured that a museum wanted them.Google turns up a few more gems.