C-SPAN’s series on first ladies begins, but some legacies are still forming

Dolley made her mark as the quintessential hostess. Eleanor broke new ground by tackling liberal causes. Lady Bird, we learned, was a quiet but effective counselor to her husband.

And what of Michelle — what will be her legacy?

Unlike the dozens of first ladies whose names and stories have been forgotten through the ages (ever had a dinner conversation about Anna Harrison or Jane Pierce?) the nation’s first African American first lady will surely be remembered in history books for a racial barrier broken. But what else will future generations find remarkable?

The year-long C-SPAN series “First Ladies: Influence and Image,” which launches Monday night, provides an opportunity to ponder the question.