Four men who thru-hiked the Appalachian Trail in 1951 transformed the trail experience.
"The Class of '51: Back When Few Knew about the Appalachian Trail, Four Men Pioneered Thru-Hiking,"
Appalachia: Vol. 71:
2, Article 5.
Available at: https://digitalcommons.dartmouth.edu/appalachia/vol71/iss2/5