Sunday Morning Bonus Pulp: Adventure, September 1940
Gorilla with a rifle! Paging Mark Finn! Behind that distinctive cover is what seems to be a good issue of one of the great pulps, with stories by Georges Surdez, Joel Townsley Rogers, Tom Roan, Dale Clark, and an installment of the serial by Luke Short that became the novel BARREN LAND SHOWDOWN (Mounties vs. Nazis, if I recall correctly; it's been a long time since I read it). I'm not familiar with Brian O'Brien, who wrote the lead novel, but I'm sure it's good, too. Not many bad stories got published in ADVENTURE.