[2] He went on to become an American Studies Professor at George Mason University and the founding director of that institution's Hemlock Overlook: Center for Outdoor Education (1985–96).
[7] Jennifer Pharr Davis, the onetime record holder for the fastest AT hike, completed Warren's Appalachian Trail Institute and cited him in her books as an inspiration.
[9] During the summer of 2018, Doyle provided logistical assistance to Karel Sabbe, a Belgian dentist who set the fastest known time for a supported AT traverse (41.5 days - a record that stood until September 21, 2024[10]).
[13] In winter 1979, following an act of civil disobedience, Warren was cited at Baxter State Park for climbing Katahdin, the terminus of the trail.
As a matter of conscience, Warren chose to spend a night in jail rather than pay a $25 fine to raise awareness for what he thought was an unnecessary policy.
Notably, he, along with his wife Terry, produce the Winter Contradancers Delight Holiday,[15] held annually December 26-31 at Lakeview Golf Resort (Morgantown, W.Va.)and the Spring Contradancers Delight Holiday held annually in mid-May at the Appalachian Folk School in northeast TN.