Regarding publications that detail the old Tyneside electric network, I have a fairly old (Ian Allan, 1980) book called "The Railway Carriage Album" that details, quite briefly admittedly, the pre-nationalisation rolling stock of the Tyneside electric network, including several exterior and one interior shot of the original 1904 NER North Tyneside electric cars that launched the electric service, the later 1920 NER electric cars that, following a refurbishment, later found work on the South Tyneside electric services when they were electrified in 1937 and finally the Gresley-designed articulated railcar sets built to replace the 1904 stock in 1937. The book is surely long out of print by now, but could probably be bought for a song if any were to be found online.
Another, more recent, book, "The Railways of South Shields" by Neil Sinclair and Ian Carr, provides a more detailed potted history of the Tyneside electric system within it's body of text, as well as a couple of pictures of the later 2-EPBs in addition to a few of the older electric stock.