On pencils, you mean?
Who's Who, which is certainly not infallible, offers for pencils in 1952 on Secret Hearts: Sachs, Drucker, Infantino, Hasen, Oksner. Greene's not out of the question, listed as 1953. Giella, Giacoia and Sachs probably on inks (no surprise there).
Supposedly Sekowsky didn't work on Secret Hearts until 1958.
Doesn't this look like the same team on this story (not the cover) in Secret Hearts # 8? -
Actually, the inks don't seem fussy enough on the hair in the SH8 story, but I'm no expert.
There's a secondary character on another page of the SH13 story that might give it away to you better spotters. I'll scan it later.
Jack