The funny thing is - when I was a kid, the local paper only ran Mark Trail on Sundays. The other six days they ran something called Buz Sawyer, as I recall. It was years before I found out that Mark had advenutres of his own, and didn't just pop up on Sundays to talk about animals.
Buz Sawyer was a long-running adventure strip created and owned by Roy Crane. Crane had earlier created Wash Tubbs, which evolved into one of the first and best-regarded adventure strips, and its spin-off Captain Easy. According to Lambiek he retired from Sawyer in the 60s, so by the time you remember it may have been in the hands of his successors.