A kids' guide to America's first ladies

Introduction: First Ladies rule

Must I always be first?: Martha Washington

Do NOT forget the ladies!: Abigail Adams

Presidents who (technically) had no first ladies and why

Bubbly, bold, brave: Dolley Madison

Illness, heroic journeys, and Texas: Elizabeth Monroe, Louisa Adams, Anna Harrison, and two very different Tylers - Letitia Tyler and Julia Tyler

Ambition versus invisibility: Sarah Polk, Margaret Taylor, Abigail Fillmore, and Jane Pierce

Civil War breaks out: Mary Lincoln

And now the "New Woman Era:" Eliza Johnson, Julia Grant, Lucy Hayes and Lucretia Garfield

The modern woman emerges: Frances Cleveland, Caroline Harrison, Ida McKinley, Edith Roosevelt, and Helen Taft

The artist and the first woman prez: Ellen Wilson and Edith Wilson

Flying first ladies: Florence Harding, Grace Coolidge, and Lou Hoover

First lady of the world: Eleanor Roosevelt

Pink and pretty: Bess Truman and Mamie Eisenhower

One thousand days - and beyond: Jacqueline Kennedy

A millionaire, a Goodwill ambassador, and one who made a difference: Lady Bird Johnson, Pat Nixon, and Betty Ford

The steel magnolia, the iron butterfly and the enforcer: Rosalynn Carter, Nancy Reagan, and Barbara Bush

Developing a thick skin: Hillary Clinton

The bookworm: Laura Bush

Serious role model: Michelle Obama

Glamour to spare: Melania Trump

Forty women who shaped America.