F.F. Bruce on the Jerusalem Church of First Century AD

The following article is now on-line in PDF:

F.F. Bruce, "The Church of Jerusalem," Christian Brethren Research Fellowship Journal 4 (April 1964): 5-14.

This is a thought provoking account of the history of the Jerusalem church which provides an excellent introduction to more recent work, particularly Richard Bauckham's study:

Richard Bauckham, "The Relatives of Jesus," Themelios 21.2 (January 1996): 18-21.