United Features, 1938 Series
 
Single Series #1
Single Series #2 (1)
Single Series #3
Single Series #4 (1)
Single Series #5
Single Series #6 (1)
Single Series #7
Single Series #7
Single Series #8
Single Series #9
Single Series #10
Single Series #11
Single Series #12
Single Series #13
Single Series #14
Single Series #15
Single Series #1 [2nd Edition]
Single Series #5 (1) [2nd Edition]
Single Series #16
Single Series #17
Single Series #18 (2)
Single Series #19 (2)
Single Series #20
Single Series #21 (2)
Single Series #22
Single Series #23 (1)
Single Series #24 (1)
Single Series #25 (1)
Single Series #26 (2)
Single Series #27
Single Series #28