Vital Statistics on the Presidency
Congressional Quarterly Press.
Available online. (W&L subscription)
Based on the third edition, this online edition contains "more than 175 tables and charts covering the office of the president from George Washington to George W. Bush, including data on the 2008 presidential primaries. The volume includes statistical coverage of public approval of the president, elections, vetoes, executive orders, foreign affairs, the executive branch, congressional and judicial relations, public appearances, and much more."
Links will be maintained in several locations in the library Web site, including here.