Can't really recommend these two books, as i haven't seen them (they are not published yet ), but I thought I should note their publication, as I know there are a few people interested here in cinemas, and possibly some in theatres, and the Black Country does spill over a bit into Birmingham
See https://www.nedwilliams.co.uk/booklaunch.php
See https://www.nedwilliams.co.uk/booklaunch.php