So to get things started, I’ve already discussed these with Tim and they are just suggestions for his consideration:
—Amazing Stories, Jan 1934... add that “Doc” Smith’s Triplanetary begins (ends Apr ‘34), the story would later be re-worked by the author as a Lensman prequel.
—Horror Stories, March 1935... add classic cover (by Charles Wrenn) designation, correct that the vampire is peering down on the captive female (his reflection is in the water) as she glances up at him in terror.
—Horror Stories, Apr-May 1938... add classic cover artist is John Drew, add bare-breasted female is being manhandled in the background as the next victim.
Has to be a lot of other tidbits out there, looking forward to what others have to offer...