There had been none among them coolheaded enough to reason out which trail he had likely taken, and thus look for him by the ford.
"O. Henry Memorial Award Prize Stories of 1921"
Various
But Mantell was known for coolheaded judgment.
"The Flying Saucers are Real"
Donald Keyhoe
When I met George Gorman, I found him to be intelligent, coolheaded, and very firmly convinced of every detail in his story.
"The Flying Saucers are Real"
Donald Keyhoe