Indicia title is "JOHNNY MACK BROWN, No. 722." Code number is J.M.B. O.S. #722-569. Copyright 1956 by Johnny Mack Brown. Ninth of 13 Johnny Mack Brown Four Colors.
Inside front cover; black and white. Typeset text and illustrations. Signed CN in the top picture.
Firfires had a story in FC 685 with JMB, and can be spotted by his motionless, almost sad faces, accurate horses and the peculiar open hands with all fingers parallell, like a fork, as on page 3 and 9. Also to notice is the faces in sideview with small, narrow eyes and half open mouth. Inking seems to be varying, so it could be someone else. He had most of the stories in Gene Autry Comics.
Dell's "A Pledge to Parents" is the fourth panel on the last page, in the middle of the story.
Edson had many westerns for Dell, like Roy Rogers. He can be recognised by faces with squinting eyes, small hats and horses with high lifting legs with large pointed hooves, pointed ears and a sort of saw tooth outline of the mane. He is credited on JMB by Jerry Bails' Who's Who.
Inside back cover; black and white. Text with two large illustrations.
Could well be Lenox when looking at the inking and stong legs of the horse, but the line around the nose is not as prominent as expected.