#11

Synopsis

Mike uses an experimental device to search for historical artifacts in the Colorado River in the Grand Canyon.

Notes

On-sale date from 1961 Periodicals, Copyright Office, Library of Congress.

Reprinted in

Credits

Script: Eric Freiwald, Robert Schaefer
Pencils: Russ Manning, Sparky Moore
Inks: Russ Manning, Sparky Moore
Letters: Russ Manning