On the Trail of the Tombstone Kid!: Three Chatto covers

Maverick Western Library #5 is a third iteration of a Page Publications issue previously issued as 

Gunfighter Library #3:

and Gunman's Western #1:

All three issues feature Keith Chatto cover art.

There is probably another reprint of this issue.

The first story in each issue is On the Trail of the Tombstone Kid! The contents are indexed on AusReprints.