I have summarized many cases on this blog regarding Section 220 of the Delaware General Corporation Law (DGCL) which provides the right of a shareholder to demand books and records if the prerequisites in the statute are satisfied. (e.g., just type 220 in the search box in the right margin.) The current issue of the Delaware Law Review  just arrived in the mail and the lead article provides an analysis of recent 220 cases. See  S. Mark Hurd and Lisa Whittaker, Books and Records Demands and Litigation: Recent Trends and Their Implications for Corporate Governance,  9 Del. Law Rev. 1(2006) (published by the Delaware State Bar Association, www.dsba.org.)