The letter "H" has to be the most difficult of all the letter so far. I always try to find the less-famous titles for this series, but there aren't a lot of titles with that letter. Out of frustration I ended up picking a HOLLYWOOD DETECTIVE, even though it was also known as DAN TURNER HOLLYWOOD DETECTIVE and wasn't exactly an obscure title. In addition, HIGH SEAS ADVENTURES was a magazine that shared billing with PIRATE STORIES. By the way, I would love to read some of the HOLLYWOOD DETECTIVE stories; what are they like and have there been any reprints?
As for the rest of these titles, I think the HOW7 looks the most intriguing.
HUSH, June 1930
HOW7, April 1928
HONEYMOON STORIES, December 1933
HOLLYWOOD DETECTIVE, February 1946
HIGH SEAS ADVENTURES, February, 1935.