The federal building in Washington housing the Education Department is named after President Lyndon B. Johnson. The Department of Health and Human Services, a much bigger agency, is in a building named after his vice president, Hubert H. Humphrey.

Unlike most other contemporary presidents, Johnson has no airport bearing his name, and you can count on your fingers the number of times he has been prominently mentioned at the last 11 Democratic national conventions.

In a Gallup poll, only 20 percent of Americans rated LBJ an above-average president, a lower ranking than George W. Bush or Jimmy Carter.