Lost photo archives

It seems that many local newspapers such as the Evening Herald and the Western Morning News have limited photo archives. Many events recorded by the newspapers pre-1990 seem to be lost forever. While many photos have been contributed to and scanned by the South West Image Bank on the Barbican, there seems to be a huge hole in the archives and the only answer can be that the photos have either been destroyed or thrown away over the years. Oddly, some of the photos turn up in the US and are sold on ebay.
I've lots of old cuttings and unusual photos from Plymouth's past and wherever possible, I'll try to put them on this blog so that everyone can see them (and I'll also put them on my Flickr pages). Hopefully, even though some pictures aren't of very high quality, they will fill some of the missing gaps.
The few photos shown here come from the Western Morning News of Wednesday 25th July 1923 (please click on the images to view them larger). The caption for the photos read: 'Plymouth toll bridges at Stonehouse (left), the purchase of which is soon to be completed, and at the Embankment roads, which the Special Purposes Committee of Plymouth Town Council recommend shall be abolished at the close of the present year.'
Footnote: It seems that the negatives from photos used in the Western Morning News and Evening Herald over the years have survived after all and they're mentioned in an article from the Evening Herald of 24th December 2013:
http://www.plymouthherald.co.uk/s-Hoe-lot-snow/story-20360683-detail/story.html