414 King St, Newtown 2042 (map)
The catalogue is searchable online. Some specialisation in sport, labour history, etc.
This is a small, selective and well-maintained bookshop with very reasonable prices and an 'academic' feel to it. The opening hours are a pain - I have often stumbled off the train at Newtown and hared down King Street at 9 AM only to be disappointed! Cash only. [CC]