Cover artist: Robert Schulz (1928 - 1978) Sands of Mars, Arthur C Clark - 1954
seen from United States
seen from United States

seen from Argentina

seen from United States
seen from United States
seen from Vietnam
seen from China

seen from United States
seen from United States
seen from Russia

seen from United States
seen from China

seen from Australia

seen from China

seen from Italy
seen from United States
seen from Spain
seen from Germany

seen from United States
seen from Türkiye
Cover artist: Robert Schulz (1928 - 1978) Sands of Mars, Arthur C Clark - 1954
Sands of Mars Cover Art by Robert Schulz
Robert E. Schulz, cover art for "The Caves of Steel" by Isaac Asimov, 1955
The guy that's chasing them looks drunk or winded from smoking too many cigarettes or both. It's the 1950s so I'm guessing both.
Illustration detail from the science fiction paperback, Space Tug, by Murray Leinster. Robert Schulz, cover artist - 1954.
Male magazine, December 1953 Cover art by Robert Schulz (source)
Robert Schulz
Cover artist: Robert Schulz - (American, 1928-1978) The Grabber, paperback cover, 1964
Robert Schulz