There are plenty of pictures of Conway St and the market on Wiki, and a search will flag-up loads of them as there are several topics that overlap their information.
Are you looking at any era? Pictures go from the present day back through the flyover era, with its regeneration both before and afterwards, and back to the days of the trams running along it.
For example, a topic entitled 'The Old Market' can be seen here.
And in the picture gallery, there is 'Conway Street 1915' which can be seen here.
Hope this help you on your way..