How old is the Carl Strommen song "To the Sky"?

The sheet music for a vocal arrangement of "To the Sky" lists a copyright date of 1990 by Alfred Publishing Co. Inc. Carl Strommen adapted "To the Sky" from a Southern American folk song called "Prospect."

Carl Strommen is an American composer born in 1940 who studied music at the City College of New York. Through his career, he earned the prestigious annual ASCAP Standard Writers Award for his work. Strommen has kept true to his academic roots, serving as an adjunct professor of orchestration and composition at the C.W. Post campus of Long Island University, from which he received his bachelor's degree. His resides in Long Island, NY, but he often visits his extended family in Colorado.