But you won't find Dylan (or Robert Zimmerman, his birth name) listed in the White House visitor logs - the official record of who comes to call at 1600 Pennsylvania Ave., which is maintained by the Secret Service.

Ditto Joan Baez.

Similarly, the logs are missing the names of thousands of other visitors to the White House, including lobbyists, government employees, campaign donors, policy experts and friends of the first family, according to an investigation by the Center for Public Integrity.

The White House website proudly boasts of making available "over 1,000,000 records of everyone who's come through the doors of the White House" via a searchable database.

Yet the Center's analysis shows that the logs routinely omit or cloud key details about the identity of visitors, whom they met with and the nature of their visits. The logs even include the names of people who never showed up. These are critical gaps that raise doubts about the records' historical accuracy and utility in helping the public understand White House operations, from social events to meetings on key policy debates.