Harlequin Artists Part II - JP and NMR

Just 21 of the first 50 books published by Winnipeg's Harlequin Books had signed cover art. One artist used only initials and remains a mystery, at least to me. Here are the two books signed by "JP". If anyone has more information happy to hear from you.

Harlequin 15 - October 1949

Harlequin 16 - October 1949