English: no copyright renewal was found for the first strip from June 11th nor June 14th or 15th (true debuts of Mandrake and Lothar) under the King Features Illustrated Weekly books nor the name of the strip itself: https://www.gutenberg.org/cache/epub/11825/pg11825-images.html. Therefore the earliest version of the character as depicted here is public domain. Last image i'm uploading to Wikimedia for now since i'm a bit burned up. I was gonna upload Flash Gordon but maybe not until next month.
Date 15 June 1934
Source Mandrake The Magician June 15th 1934 Strip
Author Lee Falk

Mandrake the Magician is a syndicated newspaper comic strip, created by Lee Falk before he created The Phantom.[1][2] Mandrake began publication on June 11, 1934. Phil Davis soon took over as the strip's illustrator, while Falk continued to script. The strip was distributed by King Features Syndicate.[3]

Located on Garden Key is historic Fort Jefferson, one of the nation’s largest 19th century forts in the United States.

Plan your camping trip to Garden Key

Top 10 list to #PlanLikeaParkRanger for a visit to Dry Tortugas National Park.

Morning, Afternoon or Full Day Tours to the park on a seaplane

Take a high-speed catamaran for day and camping trips.

Dry Tortugas National Park is home to history and natural wonders above and below the water's’ surface.

Bring your own boat to Dry Tortugas National Park and get the most out of the opportunities to explore this remarkable national treasure.

With less than 1% of Dry Tortugas National Park being dry ground, the best way to see this is by swimming.