| Issue | #340 |
| Published | July 1951 |
| Cover Price | 0.10 USD |
| Pages | 36 |
| Editing | ? |
| Notes | Indicia title is "Zane Grey's KING of the ROYAL MOUNTED, No. 340." Code number is KING O.S. #340-517. Copyright 1951 by Stephen Slesinger. Copyright 1945 by King Features Syndicate. |
| Characters | King of the Royal Mounted |
| Genre | adventure |
| Pencils | Jim Gary (signed) |
| Inks | Jim Gary (signed) |
| Characters | King of the Royal Mounted |
| Synopsis | Brief history of the Mounties. |
| Genre | fact |
| Pencils | Jim Gary (signed) |
| Inks | Jim Gary (signed) |
| Letters | typeset |
| Notes | Inside front cover; black and white. Text with two illustrations. |
| Characters | King of the Royal Mounted; Footloose; Coroner Webb (villain) |
| Synopsis | Slick Jon the Gambler is murdered in an ambush, witnessed by Footloose, a young boy. When news of the killing hits town, the most likely suspects are Billy and Mandy, whose father was swindled by Slick Jon. Billy is arrested, and when Footloose is taken to town by King, Coroner Webb, who is part of the gang that killed Slick Jon, dismisses his testimony and threatens to send him to an orphanage. King helps Billy escape from jail and sends him to the gang's hideout to try to join up with the killers. |
| Genre | adventure |
| Pencils | Jim Gary |
| Inks | Jim Gary |
| Notes | Four tiers of panels per page. Story continues on inside back cover in black and white and concludes on the back cover in color. |
| Reprinted | from King of the Royal Mounted (King Features Syndicate) 1945 daily newspaper strips. |