Of all the long forgotten artists who whose work is seen on the first ten years of Harlequin Books no one did more covers than Paul Anna Soik. He was one of six artists in the 2009 Harlequin Cover exhibition. I have learned nothing about him.
The cover of Conflict by E. V. Timms was the first of Soik's 90 (18.8% of the total) for Harlequin to the end of 1959. Here is that cover plus the second through fourth of his covers.
Harlequin 276 - February 1954
Harlequin 280 - April 1954
Harlequin 283 - March 1954
Harlequin 287 - March 1954