Elaine Duillo

Title: I Should Have Known
Author: Denise Robins
Published: Sept 1970, ©1961 Denise Robins
Publisher: Fawcett Gold Medal
Illustrator: Elaine Duillo

Her signature is in the lower right-hand corner.

Young Shelley Bray had fallen desperately in love with Esmond Torrington, the world-famous symphony conductor. She had tried to keep her passion a private thing—to remain merely the governess of Esmond’s children. But someone else had learned her secret—someone who hated her. Someone jealous enough to destroy her. Shelley did not fear for herself. But now Esmond’s destiny had become entwined with hers. She knew she must search alone through the dark shadows of his past. She did not know what she would find. She only knew that she had to save him—no matter what the cost to her. 

Lou Marchetti

Title: She Married a Doctor
Author: Dorothy Walker
Published: Aug 1962, ©1939 Liveright Publishing Corp.
Publisher: Popular Library
Illustrator: Lou Marchetti

He is not credited, but it is very much his style.

The girls who fall in love with doctors may be like Nora Eaton—young, devoted, deeply involved with her man’s career. Or, they may be like Peggy Lyman—beautiful, greedy, reckless. Or like Ann Dutton, willing to sacrifice everything to ambition. Whatever kind of girls they are, all encounter the same dangers, the same temptations. Nearly all, like Nora, encounter a fascinating intruder such as Dr. Seth Tapley. Nearly every girl like Nora, suddenly finds she must make the most difficult decision of her life ... 

John Duillo

Title: Shadowland
Author: Elaine Evans
Published: ©1970
Publisher: Magnum
Illustrator: John Duillo

His signature is in the lower left-hand corner.

A life of quiet routine, where the only hint of romance and excitement came from the pages of a book or a movie, made Caroline Ballard accept the mysterious summons to Shadowland. At first it was everything she had hoped for, being swept away in a Rolls-Royce without even a chance to change from her nurse’s uniform. But the dream began to sour when she met Shadowland, and its master. There was something demoniac about Baxter Marr that warned her away ... but something else equally strong made her accept his invitation to stay. Then she began to unravel the secrets of the old house—the horde of old movies in the cupola, the three coffins int he cellar—and the impossible identity of the dead woman in one of the coffins! What started as a dream soon turned to deadly nightmare, and Caroline knew that one of those coffins was meant for her!

Harry Schaare

Title: Dr. Kildare Takes Charge
Author: Max Brand
Published: Oct 1962, ©1940 Dodd, Mead and Co.
Publisher: Dell
Illustrator: Harry J. Schaare

He is credited on the back cover.

Nurse Mary Lamont faced Blair General’s chief-of-staff, Dr. Leonard Gillespie. “It’s true,” he told her, “Jim has gone—he left without even saying goodbye.” “But why?” Mary asked. “What could possibly have made him walk out on his brilliant career, on your confidence, and on my love?...”

Robert Maguire

Title: Dixie Doctor
Author: Marcia Ford
Published: Sept 1962, ©1955 Marcia Ford
Publisher: Monarch Books
Illustrator: Robert Maguire

His signature is in the lower right-hand corner.

Dr. Phil Abbott had planned his future carefully. He would finish his medical education, return to his home town, take over old Dr. Hudson’s practice, and then he would look for a wife. Everything was going perfectly ... Until he looked into the violet-blue eyes of Nurse Lorna Evans and found himself falling in love ... Until his best friend, Dr. Cal Hays, used his charm to sweep Lorna into his arms and out of Phil’s life ... Until the suspicious Dr. Carl Kreuse began working on the hospital’s atomic research project ... And until Phil was forced to make a decision that would challenge his loyalty to his country and his devotion to the woman he loved.