There are 3 books in the The Schuler Sisters Novels series. The newest book is Along the Infinite Sea which came out in 2015.

1
The Secret Life of Violet Grant

Book cover of The Secret Life of Violet Grant
A story of love and intrigue that travels from Kennedy-era Manhattan to World War I Europe from the New York Times bestselling author of Her Last Flight and The Golden Hour.

Fresh from college, irrepressible Vivian Schuyler defies her wealthy Fifth Avenue family to work at cutthroat Metropolitan magazine. But…
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2
Tiny Little Thing

Book cover of Tiny Little Thing
In the summer of 1966, Christina Hardcastle—“Tiny” to her illustrious family—stands on the brink of a breathtaking future. Of the three Schuyler sisters, she’s the one raised to marry a man destined for leadership, and with her elegance and impeccable style, she presents a perfect camera-ready image in the dawning…

3
Along the Infinite Sea

Book cover of Along the Infinite Sea
From the New York Times bestselling author of Her Last Flight comes another riveting novel of the Schuyler sisters—where the epic story of star-crossed lovers in pre-war Europe collides with a woman on the run in the swinging '60s...

In the autumn of 1966, Pepper Schuyler's problems are in a…