I think BZ already posted an Uncle Miltie. I have an issue which has art similar to the one shown if I remember correctly.
But I have an Alan Ladd cover that I thought was interesting. Triumph motorcycles seemed to be the choice for some Hollywood stars, possibly due to winning endurance races and setting speed records in the 40s and 50s. According to the history books, the 650 cc Triumph Thunderbird was released in 1950 which corresponds to the year of the Alan Ladd #4 release. The bike on the cover below could also be the smaller 499 cc Trophy Twin. The Triumph Thunderbird was made famous by the 1953 movie "The Wild One". Brando rode his own bike in the movie. Lee Marvin's character rode a Harley. By the way, interior art of AL 4 was by Ruben Moreira.